há 4 anos atrás · 9965816aa8
--- a/book.toml
+++ b/book.toml
@@ -0,0 +1,6 @@
 
				+[book]

			
 
				+authors = ["pamokkhananda"]

			
 
				+language = "zh"

			
 
				+multilingual = false

			
 
				+src = "src"

			
 
				+title = "曼听教材"
			
--- a/book/404.html
+++ b/book/404.html
@@ -0,0 +1,181 @@
 
				+<!DOCTYPE HTML>
			
 
				+<html lang="zh" class="sidebar-visible no-js light">
			
 
				+    <head>
			
 
				+        <!-- Book generated using mdBook -->
			
 
				+        <meta charset="UTF-8">
			
 
				+        <title></title>
			
 
				+        <base href="/">
			
 
				+        <!-- Custom HTML head -->
			
 
				+        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
			
 
				+        <meta name="description" content="">
			
 
				+        <meta name="viewport" content="width=device-width, initial-scale=1">
			
 
				+        <meta name="theme-color" content="#ffffff" />
			
 
				+
			
 
				+        <link rel="icon" href="favicon.svg">
			
 
				+        <link rel="shortcut icon" href="favicon.png">
			
 
				+        <link rel="stylesheet" href="css/variables.css">
			
 
				+        <link rel="stylesheet" href="css/general.css">
			
 
				+        <link rel="stylesheet" href="css/chrome.css">
			
 
				+        <link rel="stylesheet" href="css/print.css" media="print">
			
 
				+        <!-- Fonts -->
			
 
				+        <link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
			
 
				+        <link rel="stylesheet" href="fonts/fonts.css">
			
 
				+        <!-- Highlight.js Stylesheets -->
			
 
				+        <link rel="stylesheet" href="highlight.css">
			
 
				+        <link rel="stylesheet" href="tomorrow-night.css">
			
 
				+        <link rel="stylesheet" href="ayu-highlight.css">
			
 
				+
			
 
				+        <!-- Custom theme stylesheets -->
			
 
				+    </head>
			
 
				+    <body>
			
 
				+        <!-- Provide site root to javascript -->
			
 
				+        <script type="text/javascript">
			
 
				+            var path_to_root = "";
			
 
				+            var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
			
 
				+        </script>
			
 
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				+                }
			
 
				+            } catch (e) { }
			
 
				+        </script>
			
 
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				+        <!-- Set the theme before any content is loaded, prevents flash -->
			
 
				+        <script type="text/javascript">
			
 
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				+            try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
			
 
				+            if (theme === null || theme === undefined) { theme = default_theme; }
			
 
				+            var html = document.querySelector('html');
			
 
				+            html.classList.remove('no-js')
			
 
				+            html.classList.remove('light')
			
 
				+            html.classList.add(theme);
			
 
				+            html.classList.add('js');
			
 
				+        </script>
			
 
				+
			
 
				+        <!-- Hide / unhide sidebar before it is displayed -->
			
 
				+        <script type="text/javascript">
			
 
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				+            if (document.body.clientWidth >= 1080) {
			
 
				+                try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
			
 
				+                sidebar = sidebar || 'visible';
			
 
				+            }
			
 
				+            html.classList.remove('sidebar-visible');
			
 
				+            html.classList.add("sidebar-" + sidebar);
			
 
				+        </script>
			
 
				+
			
 
				+        <nav id="sidebar" class="sidebar" aria-label="Table of contents">
			
 
				+            <div class="sidebar-scrollbox">
			
 
				+                <ol class="chapter"><li class="chapter-item expanded "><a href="chapter_1.html"><strong aria-hidden="true">1.</strong> 首页</a></li><li class="chapter-item expanded "><a href="chapter_2.html"><strong aria-hidden="true">2.</strong> 什么是佛教？</a></li><li class="chapter-item expanded "><a href="chapter_3.html"><strong aria-hidden="true">3.</strong> 为什么学习佛法？</a></li><li class="chapter-item expanded "><a href="chapter_4.html"><strong aria-hidden="true">4.</strong> 如何学习佛法？</a></li></ol>
			
 
				+            </div>
			
 
				+            <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
			
 
				+        </nav>
			
 
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				+        <div id="page-wrapper" class="page-wrapper">
			
 
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				+                <div id="menu-bar-hover-placeholder"></div>
			
 
				+                <div id="menu-bar" class="menu-bar sticky bordered">
			
 
				+                    <div class="left-buttons">
			
 
				+                        <button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
			
 
				+                            <i class="fa fa-bars"></i>
			
 
				+                        </button>
			
 
				+                        <button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
			
 
				+                            <i class="fa fa-paint-brush"></i>
			
 
				+                        </button>
			
 
				+                        <ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
			
 
				+                        </ul>
			
 
				+                        <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
			
 
				+                            <i class="fa fa-search"></i>
			
 
				+                        </button>
			
 
				+                    </div>
			
 
				+
			
 
				+                    <h1 class="menu-title">曼听教材</h1>
			
 
				+
			
 
				+                    <div class="right-buttons">
			
 
				+                        <a href="print.html" title="Print this book" aria-label="Print this book">
			
 
				+                            <i id="print-button" class="fa fa-print"></i>
			
 
				+                        </a>
			
 
				+                    </div>
			
 
				+                </div>
			
 
				+
			
 
				+                <div id="search-wrapper" class="hidden">
			
 
				+                    <form id="searchbar-outer" class="searchbar-outer">
			
 
				+                        <input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
			
 
				+                    </form>
			
 
				+                    <div id="searchresults-outer" class="searchresults-outer hidden">
			
 
				+                        <div id="searchresults-header" class="searchresults-header"></div>
			
 
				+                        <ul id="searchresults">
			
 
				+                        </ul>
			
 
				+                    </div>
			
 
				+                </div>
			
 
				+                <!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
			
 
				+                <script type="text/javascript">
			
 
				+                    document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
			
 
				+                    document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
			
 
				+                    Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
			
 
				+                        link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
			
 
				+                    });
			
 
				+                </script>
			
 
				+
			
 
				+                <div id="content" class="content">
			
 
				+                    <main>
			
 
				+                        <h1 id="document-not-found-404"><a class="header" href="#document-not-found-404">Document not found (404)</a></h1>
			
 
				+<p>This URL is invalid, sorry. Please use the navigation bar or search to continue.</p>
			
 
				+
			
 
				+                    </main>
			
 
				+
			
 
				+                    <nav class="nav-wrapper" aria-label="Page navigation">
			
 
				+                        <!-- Mobile navigation buttons -->
			
 
				+                        <div style="clear: both"></div>
			
 
				+                    </nav>
			
 
				+                </div>
			
 
				+            </div>
			
 
				+
			
 
				+            <nav class="nav-wide-wrapper" aria-label="Page navigation">
			
 
				+            </nav>
			
 
				+
			
 
				+        </div>
			
 
				+
			
 
				+        <!-- Livereload script (if served using the cli tool) -->
			
 
				+        <script type="text/javascript">
			
 
				+            var socket = new WebSocket("ws://192.168.2.10:3000/__livereload");
			
 
				+            socket.onmessage = function (event) {
			
 
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				+                    socket.close();
			
 
				+                    location.reload();
			
 
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				+
			
 
				+            window.onbeforeunload = function() {
			
 
				+                socket.close();
			
 
				+            }
			
 
				+        </script>
			
 
				+        <script type="text/javascript">
			
 
				+            window.playground_copyable = true;
			
 
				+        </script>
			
 
				+        <script src="elasticlunr.min.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="mark.min.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="searcher.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="clipboard.min.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="highlight.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="book.js" type="text/javascript" charset="utf-8"></script>
			
 
				+
			
 
				+        <!-- Custom JS scripts -->
			
 
				+    </body>
			
 
				+</html>
			
--- a/book/ayu-highlight.css
+++ b/book/ayu-highlight.css
@@ -0,0 +1,79 @@
 
				+/*
			
 
				+Based off of the Ayu theme
			
 
				+Original by Dempfi (https://github.com/dempfi/ayu)
			
 
				+*/
			
 
				+
			
 
				+.hljs {
			
 
				+  display: block;
			
 
				+  overflow-x: auto;
			
 
				+  background: #191f26;
			
 
				+  color: #e6e1cf;
			
 
				+  padding: 0.5em;
			
 
				+}
			
 
				+
			
 
				+.hljs-comment,
			
 
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				+.hljs-selector-id,
			
 
				+.hljs-selector-class {
			
 
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				+}
			
 
				+
			
 
				+.hljs-number,
			
 
				+.hljs-meta,
			
 
				+.hljs-builtin-name,
			
 
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				+.hljs-params {
			
 
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				+  color: #d96c75;
			
 
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--- a/book/book.js
+++ b/book/book.js
@@ -0,0 +1,679 @@
 
				+"use strict";
			
 
				+
			
 
				+// Fix back button cache problem
			
 
				+window.onunload = function () { };
			
 
				+
			
 
				+// Global variable, shared between modules
			
 
				+function playground_text(playground) {
			
 
				+    let code_block = playground.querySelector("code");
			
 
				+
			
 
				+    if (window.ace && code_block.classList.contains("editable")) {
			
 
				+        let editor = window.ace.edit(code_block);
			
 
				+        return editor.getValue();
			
 
				+    } else {
			
 
				+        return code_block.textContent;
			
 
				+    }
			
 
				+}
			
 
				+
			
 
				+(function codeSnippets() {
			
 
				+    function fetch_with_timeout(url, options, timeout = 6000) {
			
 
				+        return Promise.race([
			
 
				+            fetch(url, options),
			
 
				+            new Promise((_, reject) => setTimeout(() => reject(new Error('timeout')), timeout))
			
 
				+        ]);
			
 
				+    }
			
 
				+
			
 
				+    var playgrounds = Array.from(document.querySelectorAll(".playground"));
			
 
				+    if (playgrounds.length > 0) {
			
 
				+        fetch_with_timeout("https://play.rust-lang.org/meta/crates", {
			
 
				+            headers: {
			
 
				+                'Content-Type': "application/json",
			
 
				+            },
			
 
				+            method: 'POST',
			
 
				+            mode: 'cors',
			
 
				+        })
			
 
				+        .then(response => response.json())
			
 
				+        .then(response => {
			
 
				+            // get list of crates available in the rust playground
			
 
				+            let playground_crates = response.crates.map(item => item["id"]);
			
 
				+            playgrounds.forEach(block => handle_crate_list_update(block, playground_crates));
			
 
				+        });
			
 
				+    }
			
 
				+
			
 
				+    function handle_crate_list_update(playground_block, playground_crates) {
			
 
				+        // update the play buttons after receiving the response
			
 
				+        update_play_button(playground_block, playground_crates);
			
 
				+
			
 
				+        // and install on change listener to dynamically update ACE editors
			
 
				+        if (window.ace) {
			
 
				+            let code_block = playground_block.querySelector("code");
			
 
				+            if (code_block.classList.contains("editable")) {
			
 
				+                let editor = window.ace.edit(code_block);
			
 
				+                editor.addEventListener("change", function (e) {
			
 
				+                    update_play_button(playground_block, playground_crates);
			
 
				+                });
			
 
				+                // add Ctrl-Enter command to execute rust code
			
 
				+                editor.commands.addCommand({
			
 
				+                    name: "run",
			
 
				+                    bindKey: {
			
 
				+                        win: "Ctrl-Enter",
			
 
				+                        mac: "Ctrl-Enter"
			
 
				+                    },
			
 
				+                    exec: _editor => run_rust_code(playground_block)
			
 
				+                });
			
 
				+            }
			
 
				+        }
			
 
				+    }
			
 
				+
			
 
				+    // updates the visibility of play button based on `no_run` class and
			
 
				+    // used crates vs ones available on http://play.rust-lang.org
			
 
				+    function update_play_button(pre_block, playground_crates) {
			
 
				+        var play_button = pre_block.querySelector(".play-button");
			
 
				+
			
 
				+        // skip if code is `no_run`
			
 
				+        if (pre_block.querySelector('code').classList.contains("no_run")) {
			
 
				+            play_button.classList.add("hidden");
			
 
				+            return;
			
 
				+        }
			
 
				+
			
 
				+        // get list of `extern crate`'s from snippet
			
 
				+        var txt = playground_text(pre_block);
			
 
				+        var re = /extern\s+crate\s+([a-zA-Z_0-9]+)\s*;/g;
			
 
				+        var snippet_crates = [];
			
 
				+        var item;
			
 
				+        while (item = re.exec(txt)) {
			
 
				+            snippet_crates.push(item[1]);
			
 
				+        }
			
 
				+
			
 
				+        // check if all used crates are available on play.rust-lang.org
			
 
				+        var all_available = snippet_crates.every(function (elem) {
			
 
				+            return playground_crates.indexOf(elem) > -1;
			
 
				+        });
			
 
				+
			
 
				+        if (all_available) {
			
 
				+            play_button.classList.remove("hidden");
			
 
				+        } else {
			
 
				+            play_button.classList.add("hidden");
			
 
				+        }
			
 
				+    }
			
 
				+
			
 
				+    function run_rust_code(code_block) {
			
 
				+        var result_block = code_block.querySelector(".result");
			
 
				+        if (!result_block) {
			
 
				+            result_block = document.createElement('code');
			
 
				+            result_block.className = 'result hljs language-bash';
			
 
				+
			
 
				+            code_block.append(result_block);
			
 
				+        }
			
 
				+
			
 
				+        let text = playground_text(code_block);
			
 
				+        let classes = code_block.querySelector('code').classList;
			
 
				+        let edition = "2015";
			
 
				+        if(classes.contains("edition2018")) {
			
 
				+            edition = "2018";
			
 
				+        } else if(classes.contains("edition2021")) {
			
 
				+            edition = "2021";
			
 
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				+        var params = {
			
 
				+            version: "stable",
			
 
				+            optimize: "0",
			
 
				+            code: text,
			
 
				+            edition: edition
			
 
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				+
			
 
				+        if (text.indexOf("#![feature") !== -1) {
			
 
				+            params.version = "nightly";
			
 
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				+
			
 
				+        result_block.innerText = "Running...";
			
 
				+
			
 
				+        fetch_with_timeout("https://play.rust-lang.org/evaluate.json", {
			
 
				+            headers: {
			
 
				+                'Content-Type': "application/json",
			
 
				+            },
			
 
				+            method: 'POST',
			
 
				+            mode: 'cors',
			
 
				+            body: JSON.stringify(params)
			
 
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				+        .then(response => response.json())
			
 
				+        .then(response => {
			
 
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				+                result_block.classList.add("result-no-output");
			
 
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				+                result_block.innerText = response.result;
			
 
				+                result_block.classList.remove("result-no-output");
			
 
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				+        })
			
 
				+        .catch(error => result_block.innerText = "Playground Communication: " + error.message);
			
 
				+    }
			
 
				+
			
 
				+    // Syntax highlighting Configuration
			
 
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				+        tabReplace: '    ', // 4 spaces
			
 
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				+    let code_nodes = Array
			
 
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				+    if (window.ace) {
			
 
				+        // language-rust class needs to be removed for editable
			
 
				+        // blocks or highlightjs will capture events
			
 
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				+            .forEach(function (block) { hljs.highlightBlock(block); });
			
 
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				+        Array.from(document.querySelectorAll('pre code')).forEach(function (block) {
			
 
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				+
			
 
				+        buttons.insertBefore(runCodeButton, buttons.firstChild);
			
 
				+        runCodeButton.addEventListener('click', function (e) {
			
 
				+            run_rust_code(pre_block);
			
 
				+        });
			
 
				+
			
 
				+        if (window.playground_copyable) {
			
 
				+            var copyCodeClipboardButton = document.createElement('button');
			
 
				+            copyCodeClipboardButton.className = 'fa fa-copy clip-button';
			
 
				+            copyCodeClipboardButton.innerHTML = '<i class="tooltiptext"></i>';
			
 
				+            copyCodeClipboardButton.title = 'Copy to clipboard';
			
 
				+            copyCodeClipboardButton.setAttribute('aria-label', copyCodeClipboardButton.title);
			
 
				+
			
 
				+            buttons.insertBefore(copyCodeClipboardButton, buttons.firstChild);
			
 
				+        }
			
 
				+
			
 
				+        let code_block = pre_block.querySelector("code");
			
 
				+        if (window.ace && code_block.classList.contains("editable")) {
			
 
				+            var undoChangesButton = document.createElement('button');
			
 
				+            undoChangesButton.className = 'fa fa-history reset-button';
			
 
				+            undoChangesButton.title = 'Undo changes';
			
 
				+            undoChangesButton.setAttribute('aria-label', undoChangesButton.title);
			
 
				+
			
 
				+            buttons.insertBefore(undoChangesButton, buttons.firstChild);
			
 
				+
			
 
				+            undoChangesButton.addEventListener('click', function () {
			
 
				+                let editor = window.ace.edit(code_block);
			
 
				+                editor.setValue(editor.originalCode);
			
 
				+                editor.clearSelection();
			
 
				+            });
			
 
				+        }
			
 
				+    });
			
 
				+})();
			
 
				+
			
 
				+(function themes() {
			
 
				+    var html = document.querySelector('html');
			
 
				+    var themeToggleButton = document.getElementById('theme-toggle');
			
 
				+    var themePopup = document.getElementById('theme-list');
			
 
				+    var themeColorMetaTag = document.querySelector('meta[name="theme-color"]');
			
 
				+    var stylesheets = {
			
 
				+        ayuHighlight: document.querySelector("[href$='ayu-highlight.css']"),
			
 
				+        tomorrowNight: document.querySelector("[href$='tomorrow-night.css']"),
			
 
				+        highlight: document.querySelector("[href$='highlight.css']"),
			
 
				+    };
			
 
				+
			
 
				+    function showThemes() {
			
 
				+        themePopup.style.display = 'block';
			
 
				+        themeToggleButton.setAttribute('aria-expanded', true);
			
 
				+        themePopup.querySelector("button#" + get_theme()).focus();
			
 
				+    }
			
 
				+
			
 
				+    function hideThemes() {
			
 
				+        themePopup.style.display = 'none';
			
 
				+        themeToggleButton.setAttribute('aria-expanded', false);
			
 
				+        themeToggleButton.focus();
			
 
				+    }
			
 
				+
			
 
				+    function get_theme() {
			
 
				+        var theme;
			
 
				+        try { theme = localStorage.getItem('mdbook-theme'); } catch (e) { }
			
 
				+        if (theme === null || theme === undefined) {
			
 
				+            return default_theme;
			
 
				+        } else {
			
 
				+            return theme;
			
 
				+        }
			
 
				+    }
			
 
				+
			
 
				+    function set_theme(theme, store = true) {
			
 
				+        let ace_theme;
			
 
				+
			
 
				+        if (theme == 'coal' || theme == 'navy') {
			
 
				+            stylesheets.ayuHighlight.disabled = true;
			
 
				+            stylesheets.tomorrowNight.disabled = false;
			
 
				+            stylesheets.highlight.disabled = true;
			
 
				+
			
 
				+            ace_theme = "ace/theme/tomorrow_night";
			
 
				+        } else if (theme == 'ayu') {
			
 
				+            stylesheets.ayuHighlight.disabled = false;
			
 
				+            stylesheets.tomorrowNight.disabled = true;
			
 
				+            stylesheets.highlight.disabled = true;
			
 
				+            ace_theme = "ace/theme/tomorrow_night";
			
 
				+        } else {
			
 
				+            stylesheets.ayuHighlight.disabled = true;
			
 
				+            stylesheets.tomorrowNight.disabled = true;
			
 
				+            stylesheets.highlight.disabled = false;
			
 
				+            ace_theme = "ace/theme/dawn";
			
 
				+        }
			
 
				+
			
 
				+        setTimeout(function () {
			
 
				+            themeColorMetaTag.content = getComputedStyle(document.body).backgroundColor;
			
 
				+        }, 1);
			
 
				+
			
 
				+        if (window.ace && window.editors) {
			
 
				+            window.editors.forEach(function (editor) {
			
 
				+                editor.setTheme(ace_theme);
			
 
				+            });
			
 
				+        }
			
 
				+
			
 
				+        var previousTheme = get_theme();
			
 
				+
			
 
				+        if (store) {
			
 
				+            try { localStorage.setItem('mdbook-theme', theme); } catch (e) { }
			
 
				+        }
			
 
				+
			
 
				+        html.classList.remove(previousTheme);
			
 
				+        html.classList.add(theme);
			
 
				+    }
			
 
				+
			
 
				+    // Set theme
			
 
				+    var theme = get_theme();
			
 
				+
			
 
				+    set_theme(theme, false);
			
 
				+
			
 
				+    themeToggleButton.addEventListener('click', function () {
			
 
				+        if (themePopup.style.display === 'block') {
			
 
				+            hideThemes();
			
 
				+        } else {
			
 
				+            showThemes();
			
 
				+        }
			
 
				+    });
			
 
				+
			
 
				+    themePopup.addEventListener('click', function (e) {
			
 
				+        var theme;
			
 
				+        if (e.target.className === "theme") {
			
 
				+            theme = e.target.id;
			
 
				+        } else if (e.target.parentElement.className === "theme") {
			
 
				+            theme = e.target.parentElement.id;
			
 
				+        } else {
			
 
				+            return;
			
 
				+        }
			
 
				+        set_theme(theme);
			
 
				+    });
			
 
				+
			
 
				+    themePopup.addEventListener('focusout', function(e) {
			
 
				+        // e.relatedTarget is null in Safari and Firefox on macOS (see workaround below)
			
 
				+        if (!!e.relatedTarget && !themeToggleButton.contains(e.relatedTarget) && !themePopup.contains(e.relatedTarget)) {
			
 
				+            hideThemes();
			
 
				+        }
			
 
				+    });
			
 
				+
			
 
				+    // Should not be needed, but it works around an issue on macOS & iOS: https://github.com/rust-lang/mdBook/issues/628
			
 
				+    document.addEventListener('click', function(e) {
			
 
				+        if (themePopup.style.display === 'block' && !themeToggleButton.contains(e.target) && !themePopup.contains(e.target)) {
			
 
				+            hideThemes();
			
 
				+        }
			
 
				+    });
			
 
				+
			
 
				+    document.addEventListener('keydown', function (e) {
			
 
				+        if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; }
			
 
				+        if (!themePopup.contains(e.target)) { return; }
			
 
				+
			
 
				+        switch (e.key) {
			
 
				+            case 'Escape':
			
 
				+                e.preventDefault();
			
 
				+                hideThemes();
			
 
				+                break;
			
 
				+            case 'ArrowUp':
			
 
				+                e.preventDefault();
			
 
				+                var li = document.activeElement.parentElement;
			
 
				+                if (li && li.previousElementSibling) {
			
 
				+                    li.previousElementSibling.querySelector('button').focus();
			
 
				+                }
			
 
				+                break;
			
 
				+            case 'ArrowDown':
			
 
				+                e.preventDefault();
			
 
				+                var li = document.activeElement.parentElement;
			
 
				+                if (li && li.nextElementSibling) {
			
 
				+                    li.nextElementSibling.querySelector('button').focus();
			
 
				+                }
			
 
				+                break;
			
 
				+            case 'Home':
			
 
				+                e.preventDefault();
			
 
				+                themePopup.querySelector('li:first-child button').focus();
			
 
				+                break;
			
 
				+            case 'End':
			
 
				+                e.preventDefault();
			
 
				+                themePopup.querySelector('li:last-child button').focus();
			
 
				+                break;
			
 
				+        }
			
 
				+    });
			
 
				+})();
			
 
				+
			
 
				+(function sidebar() {
			
 
				+    var html = document.querySelector("html");
			
 
				+    var sidebar = document.getElementById("sidebar");
			
 
				+    var sidebarLinks = document.querySelectorAll('#sidebar a');
			
 
				+    var sidebarToggleButton = document.getElementById("sidebar-toggle");
			
 
				+    var sidebarResizeHandle = document.getElementById("sidebar-resize-handle");
			
 
				+    var firstContact = null;
			
 
				+
			
 
				+    function showSidebar() {
			
 
				+        html.classList.remove('sidebar-hidden')
			
 
				+        html.classList.add('sidebar-visible');
			
 
				+        Array.from(sidebarLinks).forEach(function (link) {
			
 
				+            link.setAttribute('tabIndex', 0);
			
 
				+        });
			
 
				+        sidebarToggleButton.setAttribute('aria-expanded', true);
			
 
				+        sidebar.setAttribute('aria-hidden', false);
			
 
				+        try { localStorage.setItem('mdbook-sidebar', 'visible'); } catch (e) { }
			
 
				+    }
			
 
				+
			
 
				+
			
 
				+    var sidebarAnchorToggles = document.querySelectorAll('#sidebar a.toggle');
			
 
				+
			
 
				+    function toggleSection(ev) {
			
 
				+        ev.currentTarget.parentElement.classList.toggle('expanded');
			
 
				+    }
			
 
				+
			
 
				+    Array.from(sidebarAnchorToggles).forEach(function (el) {
			
 
				+        el.addEventListener('click', toggleSection);
			
 
				+    });
			
 
				+
			
 
				+    function hideSidebar() {
			
 
				+        html.classList.remove('sidebar-visible')
			
 
				+        html.classList.add('sidebar-hidden');
			
 
				+        Array.from(sidebarLinks).forEach(function (link) {
			
 
				+            link.setAttribute('tabIndex', -1);
			
 
				+        });
			
 
				+        sidebarToggleButton.setAttribute('aria-expanded', false);
			
 
				+        sidebar.setAttribute('aria-hidden', true);
			
 
				+        try { localStorage.setItem('mdbook-sidebar', 'hidden'); } catch (e) { }
			
 
				+    }
			
 
				+
			
 
				+    // Toggle sidebar
			
 
				+    sidebarToggleButton.addEventListener('click', function sidebarToggle() {
			
 
				+        if (html.classList.contains("sidebar-hidden")) {
			
 
				+            var current_width = parseInt(
			
 
				+                document.documentElement.style.getPropertyValue('--sidebar-width'), 10);
			
 
				+            if (current_width < 150) {
			
 
				+                document.documentElement.style.setProperty('--sidebar-width', '150px');
			
 
				+            }
			
 
				+            showSidebar();
			
 
				+        } else if (html.classList.contains("sidebar-visible")) {
			
 
				+            hideSidebar();
			
 
				+        } else {
			
 
				+            if (getComputedStyle(sidebar)['transform'] === 'none') {
			
 
				+                hideSidebar();
			
 
				+            } else {
			
 
				+                showSidebar();
			
 
				+            }
			
 
				+        }
			
 
				+    });
			
 
				+
			
 
				+    sidebarResizeHandle.addEventListener('mousedown', initResize, false);
			
 
				+
			
 
				+    function initResize(e) {
			
 
				+        window.addEventListener('mousemove', resize, false);
			
 
				+        window.addEventListener('mouseup', stopResize, false);
			
 
				+        html.classList.add('sidebar-resizing');
			
 
				+    }
			
 
				+    function resize(e) {
			
 
				+        var pos = (e.clientX - sidebar.offsetLeft);
			
 
				+        if (pos < 20) {
			
 
				+            hideSidebar();
			
 
				+        } else {
			
 
				+            if (html.classList.contains("sidebar-hidden")) {
			
 
				+                showSidebar();
			
 
				+            }
			
 
				+            pos = Math.min(pos, window.innerWidth - 100);
			
 
				+            document.documentElement.style.setProperty('--sidebar-width', pos + 'px');
			
 
				+        }
			
 
				+    }
			
 
				+    //on mouseup remove windows functions mousemove & mouseup
			
 
				+    function stopResize(e) {
			
 
				+        html.classList.remove('sidebar-resizing');
			
 
				+        window.removeEventListener('mousemove', resize, false);
			
 
				+        window.removeEventListener('mouseup', stopResize, false);
			
 
				+    }
			
 
				+
			
 
				+    document.addEventListener('touchstart', function (e) {
			
 
				+        firstContact = {
			
 
				+            x: e.touches[0].clientX,
			
 
				+            time: Date.now()
			
 
				+        };
			
 
				+    }, { passive: true });
			
 
				+
			
 
				+    document.addEventListener('touchmove', function (e) {
			
 
				+        if (!firstContact)
			
 
				+            return;
			
 
				+
			
 
				+        var curX = e.touches[0].clientX;
			
 
				+        var xDiff = curX - firstContact.x,
			
 
				+            tDiff = Date.now() - firstContact.time;
			
 
				+
			
 
				+        if (tDiff < 250 && Math.abs(xDiff) >= 150) {
			
 
				+            if (xDiff >= 0 && firstContact.x < Math.min(document.body.clientWidth * 0.25, 300))
			
 
				+                showSidebar();
			
 
				+            else if (xDiff < 0 && curX < 300)
			
 
				+                hideSidebar();
			
 
				+
			
 
				+            firstContact = null;
			
 
				+        }
			
 
				+    }, { passive: true });
			
 
				+
			
 
				+    // Scroll sidebar to current active section
			
 
				+    var activeSection = document.getElementById("sidebar").querySelector(".active");
			
 
				+    if (activeSection) {
			
 
				+        // https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView
			
 
				+        activeSection.scrollIntoView({ block: 'center' });
			
 
				+    }
			
 
				+})();
			
 
				+
			
 
				+(function chapterNavigation() {
			
 
				+    document.addEventListener('keydown', function (e) {
			
 
				+        if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; }
			
 
				+        if (window.search && window.search.hasFocus()) { return; }
			
 
				+
			
 
				+        switch (e.key) {
			
 
				+            case 'ArrowRight':
			
 
				+                e.preventDefault();
			
 
				+                var nextButton = document.querySelector('.nav-chapters.next');
			
 
				+                if (nextButton) {
			
 
				+                    window.location.href = nextButton.href;
			
 
				+                }
			
 
				+                break;
			
 
				+            case 'ArrowLeft':
			
 
				+                e.preventDefault();
			
 
				+                var previousButton = document.querySelector('.nav-chapters.previous');
			
 
				+                if (previousButton) {
			
 
				+                    window.location.href = previousButton.href;
			
 
				+                }
			
 
				+                break;
			
 
				+        }
			
 
				+    });
			
 
				+})();
			
 
				+
			
 
				+(function clipboard() {
			
 
				+    var clipButtons = document.querySelectorAll('.clip-button');
			
 
				+
			
 
				+    function hideTooltip(elem) {
			
 
				+        elem.firstChild.innerText = "";
			
 
				+        elem.className = 'fa fa-copy clip-button';
			
 
				+    }
			
 
				+
			
 
				+    function showTooltip(elem, msg) {
			
 
				+        elem.firstChild.innerText = msg;
			
 
				+        elem.className = 'fa fa-copy tooltipped';
			
 
				+    }
			
 
				+
			
 
				+    var clipboardSnippets = new ClipboardJS('.clip-button', {
			
 
				+        text: function (trigger) {
			
 
				+            hideTooltip(trigger);
			
 
				+            let playground = trigger.closest("pre");
			
 
				+            return playground_text(playground);
			
 
				+        }
			
 
				+    });
			
 
				+
			
 
				+    Array.from(clipButtons).forEach(function (clipButton) {
			
 
				+        clipButton.addEventListener('mouseout', function (e) {
			
 
				+            hideTooltip(e.currentTarget);
			
 
				+        });
			
 
				+    });
			
 
				+
			
 
				+    clipboardSnippets.on('success', function (e) {
			
 
				+        e.clearSelection();
			
 
				+        showTooltip(e.trigger, "Copied!");
			
 
				+    });
			
 
				+
			
 
				+    clipboardSnippets.on('error', function (e) {
			
 
				+        showTooltip(e.trigger, "Clipboard error!");
			
 
				+    });
			
 
				+})();
			
 
				+
			
 
				+(function scrollToTop () {
			
 
				+    var menuTitle = document.querySelector('.menu-title');
			
 
				+
			
 
				+    menuTitle.addEventListener('click', function () {
			
 
				+        document.scrollingElement.scrollTo({ top: 0, behavior: 'smooth' });
			
 
				+    });
			
 
				+})();
			
 
				+
			
 
				+(function controllMenu() {
			
 
				+    var menu = document.getElementById('menu-bar');
			
 
				+
			
 
				+    (function controllPosition() {
			
 
				+        var scrollTop = document.scrollingElement.scrollTop;
			
 
				+        var prevScrollTop = scrollTop;
			
 
				+        var minMenuY = -menu.clientHeight - 50;
			
 
				+        // When the script loads, the page can be at any scroll (e.g. if you reforesh it).
			
 
				+        menu.style.top = scrollTop + 'px';
			
 
				+        // Same as parseInt(menu.style.top.slice(0, -2), but faster
			
 
				+        var topCache = menu.style.top.slice(0, -2);
			
 
				+        menu.classList.remove('sticky');
			
 
				+        var stickyCache = false; // Same as menu.classList.contains('sticky'), but faster
			
 
				+        document.addEventListener('scroll', function () {
			
 
				+            scrollTop = Math.max(document.scrollingElement.scrollTop, 0);
			
 
				+            // `null` means that it doesn't need to be updated
			
 
				+            var nextSticky = null;
			
 
				+            var nextTop = null;
			
 
				+            var scrollDown = scrollTop > prevScrollTop;
			
 
				+            var menuPosAbsoluteY = topCache - scrollTop;
			
 
				+            if (scrollDown) {
			
 
				+                nextSticky = false;
			
 
				+                if (menuPosAbsoluteY > 0) {
			
 
				+                    nextTop = prevScrollTop;
			
 
				+                }
			
 
				+            } else {
			
 
				+                if (menuPosAbsoluteY > 0) {
			
 
				+                    nextSticky = true;
			
 
				+                } else if (menuPosAbsoluteY < minMenuY) {
			
 
				+                    nextTop = prevScrollTop + minMenuY;
			
 
				+                }
			
 
				+            }
			
 
				+            if (nextSticky === true && stickyCache === false) {
			
 
				+                menu.classList.add('sticky');
			
 
				+                stickyCache = true;
			
 
				+            } else if (nextSticky === false && stickyCache === true) {
			
 
				+                menu.classList.remove('sticky');
			
 
				+                stickyCache = false;
			
 
				+            }
			
 
				+            if (nextTop !== null) {
			
 
				+                menu.style.top = nextTop + 'px';
			
 
				+                topCache = nextTop;
			
 
				+            }
			
 
				+            prevScrollTop = scrollTop;
			
 
				+        }, { passive: true });
			
 
				+    })();
			
 
				+    (function controllBorder() {
			
 
				+        menu.classList.remove('bordered');
			
 
				+        document.addEventListener('scroll', function () {
			
 
				+            if (menu.offsetTop === 0) {
			
 
				+                menu.classList.remove('bordered');
			
 
				+            } else {
			
 
				+                menu.classList.add('bordered');
			
 
				+            }
			
 
				+        }, { passive: true });
			
 
				+    })();
			
 
				+})();
			
--- a/book/chapter_1.html
+++ b/book/chapter_1.html
@@ -0,0 +1,185 @@
 
				+<!DOCTYPE HTML>
			
 
				+<html lang="zh" class="sidebar-visible no-js light">
			
 
				+    <head>
			
 
				+        <!-- Book generated using mdBook -->
			
 
				+        <meta charset="UTF-8">
			
 
				+        <title>首页 - 曼听教材</title>
			
 
				+        <!-- Custom HTML head -->
			
 
				+        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
			
 
				+        <meta name="description" content="">
			
 
				+        <meta name="viewport" content="width=device-width, initial-scale=1">
			
 
				+        <meta name="theme-color" content="#ffffff" />
			
 
				+
			
 
				+        <link rel="icon" href="favicon.svg">
			
 
				+        <link rel="shortcut icon" href="favicon.png">
			
 
				+        <link rel="stylesheet" href="css/variables.css">
			
 
				+        <link rel="stylesheet" href="css/general.css">
			
 
				+        <link rel="stylesheet" href="css/chrome.css">
			
 
				+        <link rel="stylesheet" href="css/print.css" media="print">
			
 
				+        <!-- Fonts -->
			
 
				+        <link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
			
 
				+        <link rel="stylesheet" href="fonts/fonts.css">
			
 
				+        <!-- Highlight.js Stylesheets -->
			
 
				+        <link rel="stylesheet" href="highlight.css">
			
 
				+        <link rel="stylesheet" href="tomorrow-night.css">
			
 
				+        <link rel="stylesheet" href="ayu-highlight.css">
			
 
				+
			
 
				+        <!-- Custom theme stylesheets -->
			
 
				+    </head>
			
 
				+    <body>
			
 
				+        <!-- Provide site root to javascript -->
			
 
				+        <script type="text/javascript">
			
 
				+            var path_to_root = "";
			
 
				+            var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
			
 
				+        </script>
			
 
				+
			
 
				+        <!-- Work around some values being stored in localStorage wrapped in quotes -->
			
 
				+        <script type="text/javascript">
			
 
				+            try {
			
 
				+                var theme = localStorage.getItem('mdbook-theme');
			
 
				+                var sidebar = localStorage.getItem('mdbook-sidebar');
			
 
				+
			
 
				+                if (theme.startsWith('"') && theme.endsWith('"')) {
			
 
				+                    localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
			
 
				+                }
			
 
				+
			
 
				+                if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
			
 
				+                    localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
			
 
				+                }
			
 
				+            } catch (e) { }
			
 
				+        </script>
			
 
				+
			
 
				+        <!-- Set the theme before any content is loaded, prevents flash -->
			
 
				+        <script type="text/javascript">
			
 
				+            var theme;
			
 
				+            try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
			
 
				+            if (theme === null || theme === undefined) { theme = default_theme; }
			
 
				+            var html = document.querySelector('html');
			
 
				+            html.classList.remove('no-js')
			
 
				+            html.classList.remove('light')
			
 
				+            html.classList.add(theme);
			
 
				+            html.classList.add('js');
			
 
				+        </script>
			
 
				+
			
 
				+        <!-- Hide / unhide sidebar before it is displayed -->
			
 
				+        <script type="text/javascript">
			
 
				+            var html = document.querySelector('html');
			
 
				+            var sidebar = 'hidden';
			
 
				+            if (document.body.clientWidth >= 1080) {
			
 
				+                try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
			
 
				+                sidebar = sidebar || 'visible';
			
 
				+            }
			
 
				+            html.classList.remove('sidebar-visible');
			
 
				+            html.classList.add("sidebar-" + sidebar);
			
 
				+        </script>
			
 
				+
			
 
				+        <nav id="sidebar" class="sidebar" aria-label="Table of contents">
			
 
				+            <div class="sidebar-scrollbox">
			
 
				+                <ol class="chapter"><li class="chapter-item expanded "><a href="chapter_1.html" class="active"><strong aria-hidden="true">1.</strong> 首页</a></li><li class="chapter-item expanded "><a href="chapter_2.html"><strong aria-hidden="true">2.</strong> 什么是佛教？</a></li><li class="chapter-item expanded "><a href="chapter_3.html"><strong aria-hidden="true">3.</strong> 为什么学习佛法？</a></li><li class="chapter-item expanded "><a href="chapter_4.html"><strong aria-hidden="true">4.</strong> 如何学习佛法？</a></li></ol>
			
 
				+            </div>
			
 
				+            <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
			
 
				+        </nav>
			
 
				+
			
 
				+        <div id="page-wrapper" class="page-wrapper">
			
 
				+
			
 
				+            <div class="page">
			
 
				+                <div id="menu-bar-hover-placeholder"></div>
			
 
				+                <div id="menu-bar" class="menu-bar sticky bordered">
			
 
				+                    <div class="left-buttons">
			
 
				+                        <button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
			
 
				+                            <i class="fa fa-bars"></i>
			
 
				+                        </button>
			
 
				+                        <button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
			
 
				+                            <i class="fa fa-paint-brush"></i>
			
 
				+                        </button>
			
 
				+                        <ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
			
 
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				+            if (theme === null || theme === undefined) { theme = default_theme; }
			
 
				+            var html = document.querySelector('html');
			
 
				+            html.classList.remove('no-js')
			
 
				+            html.classList.remove('light')
			
 
				+            html.classList.add(theme);
			
 
				+            html.classList.add('js');
			
 
				+        </script>
			
 
				+
			
 
				+        <!-- Hide / unhide sidebar before it is displayed -->
			
 
				+        <script type="text/javascript">
			
 
				+            var html = document.querySelector('html');
			
 
				+            var sidebar = 'hidden';
			
 
				+            if (document.body.clientWidth >= 1080) {
			
 
				+                try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
			
 
				+                sidebar = sidebar || 'visible';
			
 
				+            }
			
 
				+            html.classList.remove('sidebar-visible');
			
 
				+            html.classList.add("sidebar-" + sidebar);
			
 
				+        </script>
			
 
				+
			
 
				+        <nav id="sidebar" class="sidebar" aria-label="Table of contents">
			
 
				+            <div class="sidebar-scrollbox">
			
 
				+                <ol class="chapter"><li class="chapter-item expanded "><a href="chapter_1.html"><strong aria-hidden="true">1.</strong> 首页</a></li><li class="chapter-item expanded "><a href="chapter_2.html"><strong aria-hidden="true">2.</strong> 什么是佛教？</a></li><li class="chapter-item expanded "><a href="chapter_3.html"><strong aria-hidden="true">3.</strong> 为什么学习佛法？</a></li><li class="chapter-item expanded "><a href="chapter_4.html"><strong aria-hidden="true">4.</strong> 如何学习佛法？</a></li></ol>
			
 
				+            </div>
			
 
				+            <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
			
 
				+        </nav>
			
 
				+
			
 
				+        <div id="page-wrapper" class="page-wrapper">
			
 
				+
			
 
				+            <div class="page">
			
 
				+                <div id="menu-bar-hover-placeholder"></div>
			
 
				+                <div id="menu-bar" class="menu-bar sticky bordered">
			
 
				+                    <div class="left-buttons">
			
 
				+                        <button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
			
 
				+                            <i class="fa fa-bars"></i>
			
 
				+                        </button>
			
 
				+                        <button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
			
 
				+                            <i class="fa fa-paint-brush"></i>
			
 
				+                        </button>
			
 
				+                        <ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
			
 
				+                        </ul>
			
 
				+                        <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
			
 
				+                            <i class="fa fa-search"></i>
			
 
				+                        </button>
			
 
				+                    </div>
			
 
				+
			
 
				+                    <h1 class="menu-title">曼听教材</h1>
			
 
				+
			
 
				+                    <div class="right-buttons">
			
 
				+                        <a href="print.html" title="Print this book" aria-label="Print this book">
			
 
				+                            <i id="print-button" class="fa fa-print"></i>
			
 
				+                        </a>
			
 
				+                    </div>
			
 
				+                </div>
			
 
				+
			
 
				+                <div id="search-wrapper" class="hidden">
			
 
				+                    <form id="searchbar-outer" class="searchbar-outer">
			
 
				+                        <input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
			
 
				+                    </form>
			
 
				+                    <div id="searchresults-outer" class="searchresults-outer hidden">
			
 
				+                        <div id="searchresults-header" class="searchresults-header"></div>
			
 
				+                        <ul id="searchresults">
			
 
				+                        </ul>
			
 
				+                    </div>
			
 
				+                </div>
			
 
				+                <!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
			
 
				+                <script type="text/javascript">
			
 
				+                    document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
			
 
				+                    document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
			
 
				+                    Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
			
 
				+                        link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
			
 
				+                    });
			
 
				+                </script>
			
 
				+
			
 
				+                <div id="content" class="content">
			
 
				+                    <main>
			
 
				+                        <h1 id="首页"><a class="header" href="#首页">首页</a></h1>
			
 
				+
			
 
				+                    </main>
			
 
				+
			
 
				+                    <nav class="nav-wrapper" aria-label="Page navigation">
			
 
				+                        <!-- Mobile navigation buttons -->
			
 
				+                            <a rel="next" href="chapter_2.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
			
 
				+                                <i class="fa fa-angle-right"></i>
			
 
				+                            </a>
			
 
				+                        <div style="clear: both"></div>
			
 
				+                    </nav>
			
 
				+                </div>
			
 
				+            </div>
			
 
				+
			
 
				+            <nav class="nav-wide-wrapper" aria-label="Page navigation">
			
 
				+                    <a rel="next" href="chapter_2.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
			
 
				+                        <i class="fa fa-angle-right"></i>
			
 
				+                    </a>
			
 
				+            </nav>
			
 
				+
			
 
				+        </div>
			
 
				+
			
 
				+        <!-- Livereload script (if served using the cli tool) -->
			
 
				+        <script type="text/javascript">
			
 
				+            var socket = new WebSocket("ws://192.168.2.10:3000/__livereload");
			
 
				+            socket.onmessage = function (event) {
			
 
				+                if (event.data === "reload") {
			
 
				+                    socket.close();
			
 
				+                    location.reload();
			
 
				+                }
			
 
				+            };
			
 
				+
			
 
				+            window.onbeforeunload = function() {
			
 
				+                socket.close();
			
 
				+            }
			
 
				+        </script>
			
 
				+        <script type="text/javascript">
			
 
				+            window.playground_copyable = true;
			
 
				+        </script>
			
 
				+        <script src="elasticlunr.min.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="mark.min.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="searcher.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="clipboard.min.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="highlight.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="book.js" type="text/javascript" charset="utf-8"></script>
			
 
				+
			
 
				+        <!-- Custom JS scripts -->
			
 
				+    </body>
			
 
				+</html>
			
--- a/book/mark.min.js
+++ b/book/mark.min.js
--- a/book/print.html
+++ b/book/print.html
@@ -0,0 +1,188 @@
 
				+<!DOCTYPE HTML>
			
 
				+<html lang="zh" class="sidebar-visible no-js light">
			
 
				+    <head>
			
 
				+        <!-- Book generated using mdBook -->
			
 
				+        <meta charset="UTF-8">
			
 
				+        <title>曼听教材</title>
			
 
				+        <meta name="robots" content="noindex" />
			
 
				+        <!-- Custom HTML head -->
			
 
				+        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
			
 
				+        <meta name="description" content="">
			
 
				+        <meta name="viewport" content="width=device-width, initial-scale=1">
			
 
				+        <meta name="theme-color" content="#ffffff" />
			
 
				+
			
 
				+        <link rel="icon" href="favicon.svg">
			
 
				+        <link rel="shortcut icon" href="favicon.png">
			
 
				+        <link rel="stylesheet" href="css/variables.css">
			
 
				+        <link rel="stylesheet" href="css/general.css">
			
 
				+        <link rel="stylesheet" href="css/chrome.css">
			
 
				+        <link rel="stylesheet" href="css/print.css" media="print">
			
 
				+        <!-- Fonts -->
			
 
				+        <link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
			
 
				+        <link rel="stylesheet" href="fonts/fonts.css">
			
 
				+        <!-- Highlight.js Stylesheets -->
			
 
				+        <link rel="stylesheet" href="highlight.css">
			
 
				+        <link rel="stylesheet" href="tomorrow-night.css">
			
 
				+        <link rel="stylesheet" href="ayu-highlight.css">
			
 
				+
			
 
				+        <!-- Custom theme stylesheets -->
			
 
				+    </head>
			
 
				+    <body>
			
 
				+        <!-- Provide site root to javascript -->
			
 
				+        <script type="text/javascript">
			
 
				+            var path_to_root = "";
			
 
				+            var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
			
 
				+        </script>
			
 
				+
			
 
				+        <!-- Work around some values being stored in localStorage wrapped in quotes -->
			
 
				+        <script type="text/javascript">
			
 
				+            try {
			
 
				+                var theme = localStorage.getItem('mdbook-theme');
			
 
				+                var sidebar = localStorage.getItem('mdbook-sidebar');
			
 
				+
			
 
				+                if (theme.startsWith('"') && theme.endsWith('"')) {
			
 
				+                    localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
			
 
				+                }
			
 
				+
			
 
				+                if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
			
 
				+                    localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
			
 
				+                }
			
 
				+            } catch (e) { }
			
 
				+        </script>
			
 
				+
			
 
				+        <!-- Set the theme before any content is loaded, prevents flash -->
			
 
				+        <script type="text/javascript">
			
 
				+            var theme;
			
 
				+            try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
			
 
				+            if (theme === null || theme === undefined) { theme = default_theme; }
			
 
				+            var html = document.querySelector('html');
			
 
				+            html.classList.remove('no-js')
			
 
				+            html.classList.remove('light')
			
 
				+            html.classList.add(theme);
			
 
				+            html.classList.add('js');
			
 
				+        </script>
			
 
				+
			
 
				+        <!-- Hide / unhide sidebar before it is displayed -->
			
 
				+        <script type="text/javascript">
			
 
				+            var html = document.querySelector('html');
			
 
				+            var sidebar = 'hidden';
			
 
				+            if (document.body.clientWidth >= 1080) {
			
 
				+                try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
			
 
				+                sidebar = sidebar || 'visible';
			
 
				+            }
			
 
				+            html.classList.remove('sidebar-visible');
			
 
				+            html.classList.add("sidebar-" + sidebar);
			
 
				+        </script>
			
 
				+
			
 
				+        <nav id="sidebar" class="sidebar" aria-label="Table of contents">
			
 
				+            <div class="sidebar-scrollbox">
			
 
				+                <ol class="chapter"><li class="chapter-item expanded "><a href="chapter_1.html"><strong aria-hidden="true">1.</strong> 首页</a></li><li class="chapter-item expanded "><a href="chapter_2.html"><strong aria-hidden="true">2.</strong> 什么是佛教？</a></li><li class="chapter-item expanded "><a href="chapter_3.html"><strong aria-hidden="true">3.</strong> 为什么学习佛法？</a></li><li class="chapter-item expanded "><a href="chapter_4.html"><strong aria-hidden="true">4.</strong> 如何学习佛法？</a></li></ol>
			
 
				+            </div>
			
 
				+            <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
			
 
				+        </nav>
			
 
				+
			
 
				+        <div id="page-wrapper" class="page-wrapper">
			
 
				+
			
 
				+            <div class="page">
			
 
				+                <div id="menu-bar-hover-placeholder"></div>
			
 
				+                <div id="menu-bar" class="menu-bar sticky bordered">
			
 
				+                    <div class="left-buttons">
			
 
				+                        <button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
			
 
				+                            <i class="fa fa-bars"></i>
			
 
				+                        </button>
			
 
				+                        <button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
			
 
				+                            <i class="fa fa-paint-brush"></i>
			
 
				+                        </button>
			
 
				+                        <ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
			
 
				+                            <li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
			
 
				+                        </ul>
			
 
				+                        <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
			
 
				+                            <i class="fa fa-search"></i>
			
 
				+                        </button>
			
 
				+                    </div>
			
 
				+
			
 
				+                    <h1 class="menu-title">曼听教材</h1>
			
 
				+
			
 
				+                    <div class="right-buttons">
			
 
				+                        <a href="print.html" title="Print this book" aria-label="Print this book">
			
 
				+                            <i id="print-button" class="fa fa-print"></i>
			
 
				+                        </a>
			
 
				+                    </div>
			
 
				+                </div>
			
 
				+
			
 
				+                <div id="search-wrapper" class="hidden">
			
 
				+                    <form id="searchbar-outer" class="searchbar-outer">
			
 
				+                        <input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
			
 
				+                    </form>
			
 
				+                    <div id="searchresults-outer" class="searchresults-outer hidden">
			
 
				+                        <div id="searchresults-header" class="searchresults-header"></div>
			
 
				+                        <ul id="searchresults">
			
 
				+                        </ul>
			
 
				+                    </div>
			
 
				+                </div>
			
 
				+                <!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
			
 
				+                <script type="text/javascript">
			
 
				+                    document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
			
 
				+                    document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
			
 
				+                    Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
			
 
				+                        link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
			
 
				+                    });
			
 
				+                </script>
			
 
				+
			
 
				+                <div id="content" class="content">
			
 
				+                    <main>
			
 
				+                        <h1 id="首页"><a class="header" href="#首页">首页</a></h1>
			
 
				+<div style="break-before: page; page-break-before: always;"></div><h1 id="什么是佛教"><a class="header" href="#什么是佛教">什么是佛教？</a></h1>
			
 
				+<div style="break-before: page; page-break-before: always;"></div><h1 id="为什么学习佛法"><a class="header" href="#为什么学习佛法">为什么学习佛法？</a></h1>
			
 
				+<div style="break-before: page; page-break-before: always;"></div><h1 id="如何学习佛法"><a class="header" href="#如何学习佛法">如何学习佛法？</a></h1>
			
 
				+
			
 
				+                    </main>
			
 
				+
			
 
				+                    <nav class="nav-wrapper" aria-label="Page navigation">
			
 
				+                        <!-- Mobile navigation buttons -->
			
 
				+                        <div style="clear: both"></div>
			
 
				+                    </nav>
			
 
				+                </div>
			
 
				+            </div>
			
 
				+
			
 
				+            <nav class="nav-wide-wrapper" aria-label="Page navigation">
			
 
				+            </nav>
			
 
				+
			
 
				+        </div>
			
 
				+
			
 
				+        <!-- Livereload script (if served using the cli tool) -->
			
 
				+        <script type="text/javascript">
			
 
				+            var socket = new WebSocket("ws://192.168.2.10:3000/__livereload");
			
 
				+            socket.onmessage = function (event) {
			
 
				+                if (event.data === "reload") {
			
 
				+                    socket.close();
			
 
				+                    location.reload();
			
 
				+                }
			
 
				+            };
			
 
				+
			
 
				+            window.onbeforeunload = function() {
			
 
				+                socket.close();
			
 
				+            }
			
 
				+        </script>
			
 
				+        <script type="text/javascript">
			
 
				+            window.playground_copyable = true;
			
 
				+        </script>
			
 
				+        <script src="elasticlunr.min.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="mark.min.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="searcher.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="clipboard.min.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="highlight.js" type="text/javascript" charset="utf-8"></script>
			
 
				+        <script src="book.js" type="text/javascript" charset="utf-8"></script>
			
 
				+
			
 
				+        <!-- Custom JS scripts -->
			
 
				+        <script type="text/javascript">
			
 
				+        window.addEventListener('load', function() {
			
 
				+            window.setTimeout(window.print, 100);
			
 
				+        });
			
 
				+        </script>
			
 
				+    </body>
			
 
				+</html>
			
--- a/book/searcher.js
+++ b/book/searcher.js
@@ -0,0 +1,483 @@
 
				+"use strict";
			
 
				+window.search = window.search || {};
			
 
				+(function search(search) {
			
 
				+    // Search functionality
			
 
				+    //
			
 
				+    // You can use !hasFocus() to prevent keyhandling in your key
			
 
				+    // event handlers while the user is typing their search.
			
 
				+
			
 
				+    if (!Mark || !elasticlunr) {
			
 
				+        return;
			
 
				+    }
			
 
				+
			
 
				+    //IE 11 Compatibility from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
			
 
				+    if (!String.prototype.startsWith) {
			
 
				+        String.prototype.startsWith = function(search, pos) {
			
 
				+            return this.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
			
 
				+        };
			
 
				+    }
			
 
				+
			
 
				+    var search_wrap = document.getElementById('search-wrapper'),
			
 
				+        searchbar = document.getElementById('searchbar'),
			
 
				+        searchbar_outer = document.getElementById('searchbar-outer'),
			
 
				+        searchresults = document.getElementById('searchresults'),
			
 
				+        searchresults_outer = document.getElementById('searchresults-outer'),
			
 
				+        searchresults_header = document.getElementById('searchresults-header'),
			
 
				+        searchicon = document.getElementById('search-toggle'),
			
 
				+        content = document.getElementById('content'),
			
 
				+
			
 
				+        searchindex = null,
			
 
				+        doc_urls = [],
			
 
				+        results_options = {
			
 
				+            teaser_word_count: 30,
			
 
				+            limit_results: 30,
			
 
				+        },
			
 
				+        search_options = {
			
 
				+            bool: "AND",
			
 
				+            expand: true,
			
 
				+            fields: {
			
 
				+                title: {boost: 1},
			
 
				+                body: {boost: 1},
			
 
				+                breadcrumbs: {boost: 0}
			
 
				+            }
			
 
				+        },
			
 
				+        mark_exclude = [],
			
 
				+        marker = new Mark(content),
			
 
				+        current_searchterm = "",
			
 
				+        URL_SEARCH_PARAM = 'search',
			
 
				+        URL_MARK_PARAM = 'highlight',
			
 
				+        teaser_count = 0,
			
 
				+
			
 
				+        SEARCH_HOTKEY_KEYCODE = 83,
			
 
				+        ESCAPE_KEYCODE = 27,
			
 
				+        DOWN_KEYCODE = 40,
			
 
				+        UP_KEYCODE = 38,
			
 
				+        SELECT_KEYCODE = 13;
			
 
				+
			
 
				+    function hasFocus() {
			
 
				+        return searchbar === document.activeElement;
			
 
				+    }
			
 
				+
			
 
				+    function removeChildren(elem) {
			
 
				+        while (elem.firstChild) {
			
 
				+            elem.removeChild(elem.firstChild);
			
 
				+        }
			
 
				+    }
			
 
				+
			
 
				+    // Helper to parse a url into its building blocks.
			
 
				+    function parseURL(url) {
			
 
				+        var a =  document.createElement('a');
			
 
				+        a.href = url;
			
 
				+        return {
			
 
				+            source: url,
			
 
				+            protocol: a.protocol.replace(':',''),
			
 
				+            host: a.hostname,
			
 
				+            port: a.port,
			
 
				+            params: (function(){
			
 
				+                var ret = {};
			
 
				+                var seg = a.search.replace(/^\?/,'').split('&');
			
 
				+                var len = seg.length, i = 0, s;
			
 
				+                for (;i<len;i++) {
			
 
				+                    if (!seg[i]) { continue; }
			
 
				+                    s = seg[i].split('=');
			
 
				+                    ret[s[0]] = s[1];
			
 
				+                }
			
 
				+                return ret;
			
 
				+            })(),
			
 
				+            file: (a.pathname.match(/\/([^/?#]+)$/i) || [,''])[1],
			
 
				+            hash: a.hash.replace('#',''),
			
 
				+            path: a.pathname.replace(/^([^/])/,'/$1')
			
 
				+        };
			
 
				+    }
			
 
				+    
			
 
				+    // Helper to recreate a url string from its building blocks.
			
 
				+    function renderURL(urlobject) {
			
 
				+        var url = urlobject.protocol + "://" + urlobject.host;
			
 
				+        if (urlobject.port != "") {
			
 
				+            url += ":" + urlobject.port;
			
 
				+        }
			
 
				+        url += urlobject.path;
			
 
				+        var joiner = "?";
			
 
				+        for(var prop in urlobject.params) {
			
 
				+            if(urlobject.params.hasOwnProperty(prop)) {
			
 
				+                url += joiner + prop + "=" + urlobject.params[prop];
			
 
				+                joiner = "&";
			
 
				+            }
			
 
				+        }
			
 
				+        if (urlobject.hash != "") {
			
 
				+            url += "#" + urlobject.hash;
			
 
				+        }
			
 
				+        return url;
			
 
				+    }
			
 
				+    
			
 
				+    // Helper to escape html special chars for displaying the teasers
			
 
				+    var escapeHTML = (function() {
			
 
				+        var MAP = {
			
 
				+            '&': '&amp;',
			
 
				+            '<': '&lt;',
			
 
				+            '>': '&gt;',
			
 
				+            '"': '&#34;',
			
 
				+            "'": '&#39;'
			
 
				+        };
			
 
				+        var repl = function(c) { return MAP[c]; };
			
 
				+        return function(s) {
			
 
				+            return s.replace(/[&<>'"]/g, repl);
			
 
				+        };
			
 
				+    })();
			
 
				+    
			
 
				+    function formatSearchMetric(count, searchterm) {
			
 
				+        if (count == 1) {
			
 
				+            return count + " search result for '" + searchterm + "':";
			
 
				+        } else if (count == 0) {
			
 
				+            return "No search results for '" + searchterm + "'.";
			
 
				+        } else {
			
 
				+            return count + " search results for '" + searchterm + "':";
			
 
				+        }
			
 
				+    }
			
 
				+    
			
 
				+    function formatSearchResult(result, searchterms) {
			
 
				+        var teaser = makeTeaser(escapeHTML(result.doc.body), searchterms);
			
 
				+        teaser_count++;
			
 
				+
			
 
				+        // The ?URL_MARK_PARAM= parameter belongs inbetween the page and the #heading-anchor
			
 
				+        var url = doc_urls[result.ref].split("#");
			
 
				+        if (url.length == 1) { // no anchor found
			
 
				+            url.push("");
			
 
				+        }
			
 
				+
			
 
				+        // encodeURIComponent escapes all chars that could allow an XSS except
			
 
				+        // for '. Due to that we also manually replace ' with its url-encoded
			
 
				+        // representation (%27).
			
 
				+        var searchterms = encodeURIComponent(searchterms.join(" ")).replace(/\'/g, "%27");
			
 
				+
			
 
				+        return '<a href="' + path_to_root + url[0] + '?' + URL_MARK_PARAM + '=' + searchterms + '#' + url[1]
			
 
				+            + '" aria-details="teaser_' + teaser_count + '">' + result.doc.breadcrumbs + '</a>'
			
 
				+            + '<span class="teaser" id="teaser_' + teaser_count + '" aria-label="Search Result Teaser">' 
			
 
				+            + teaser + '</span>';
			
 
				+    }
			
 
				+    
			
 
				+    function makeTeaser(body, searchterms) {
			
 
				+        // The strategy is as follows:
			
 
				+        // First, assign a value to each word in the document:
			
 
				+        //  Words that correspond to search terms (stemmer aware): 40
			
 
				+        //  Normal words: 2
			
 
				+        //  First word in a sentence: 8
			
 
				+        // Then use a sliding window with a constant number of words and count the
			
 
				+        // sum of the values of the words within the window. Then use the window that got the
			
 
				+        // maximum sum. If there are multiple maximas, then get the last one.
			
 
				+        // Enclose the terms in <em>.
			
 
				+        var stemmed_searchterms = searchterms.map(function(w) {
			
 
				+            return elasticlunr.stemmer(w.toLowerCase());
			
 
				+        });
			
 
				+        var searchterm_weight = 40;
			
 
				+        var weighted = []; // contains elements of ["word", weight, index_in_document]
			
 
				+        // split in sentences, then words
			
 
				+        var sentences = body.toLowerCase().split('. ');
			
 
				+        var index = 0;
			
 
				+        var value = 0;
			
 
				+        var searchterm_found = false;
			
 
				+        for (var sentenceindex in sentences) {
			
 
				+            var words = sentences[sentenceindex].split(' ');
			
 
				+            value = 8;
			
 
				+            for (var wordindex in words) {
			
 
				+                var word = words[wordindex];
			
 
				+                if (word.length > 0) {
			
 
				+                    for (var searchtermindex in stemmed_searchterms) {
			
 
				+                        if (elasticlunr.stemmer(word).startsWith(stemmed_searchterms[searchtermindex])) {
			
 
				+                            value = searchterm_weight;
			
 
				+                            searchterm_found = true;
			
 
				+                        }
			
 
				+                    };
			
 
				+                    weighted.push([word, value, index]);
			
 
				+                    value = 2;
			
 
				+                }
			
 
				+                index += word.length;
			
 
				+                index += 1; // ' ' or '.' if last word in sentence
			
 
				+            };
			
 
				+            index += 1; // because we split at a two-char boundary '. '
			
 
				+        };
			
 
				+
			
 
				+        if (weighted.length == 0) {
			
 
				+            return body;
			
 
				+        }
			
 
				+
			
 
				+        var window_weight = [];
			
 
				+        var window_size = Math.min(weighted.length, results_options.teaser_word_count);
			
 
				+
			
 
				+        var cur_sum = 0;
			
 
				+        for (var wordindex = 0; wordindex < window_size; wordindex++) {
			
 
				+            cur_sum += weighted[wordindex][1];
			
 
				+        };
			
 
				+        window_weight.push(cur_sum);
			
 
				+        for (var wordindex = 0; wordindex < weighted.length - window_size; wordindex++) {
			
 
				+            cur_sum -= weighted[wordindex][1];
			
 
				+            cur_sum += weighted[wordindex + window_size][1];
			
 
				+            window_weight.push(cur_sum);
			
 
				+        };
			
 
				+
			
 
				+        if (searchterm_found) {
			
 
				+            var max_sum = 0;
			
 
				+            var max_sum_window_index = 0;
			
 
				+            // backwards
			
 
				+            for (var i = window_weight.length - 1; i >= 0; i--) {
			
 
				+                if (window_weight[i] > max_sum) {
			
 
				+                    max_sum = window_weight[i];
			
 
				+                    max_sum_window_index = i;
			
 
				+                }
			
 
				+            };
			
 
				+        } else {
			
 
				+            max_sum_window_index = 0;
			
 
				+        }
			
 
				+
			
 
				+        // add <em/> around searchterms
			
 
				+        var teaser_split = [];
			
 
				+        var index = weighted[max_sum_window_index][2];
			
 
				+        for (var i = max_sum_window_index; i < max_sum_window_index+window_size; i++) {
			
 
				+            var word = weighted[i];
			
 
				+            if (index < word[2]) {
			
 
				+                // missing text from index to start of `word`
			
 
				+                teaser_split.push(body.substring(index, word[2]));
			
 
				+                index = word[2];
			
 
				+            }
			
 
				+            if (word[1] == searchterm_weight) {
			
 
				+                teaser_split.push("<em>")
			
 
				+            }
			
 
				+            index = word[2] + word[0].length;
			
 
				+            teaser_split.push(body.substring(word[2], index));
			
 
				+            if (word[1] == searchterm_weight) {
			
 
				+                teaser_split.push("</em>")
			
 
				+            }
			
 
				+        };
			
 
				+
			
 
				+        return teaser_split.join('');
			
 
				+    }
			
 
				+
			
 
				+    function init(config) {
			
 
				+        results_options = config.results_options;
			
 
				+        search_options = config.search_options;
			
 
				+        searchbar_outer = config.searchbar_outer;
			
 
				+        doc_urls = config.doc_urls;
			
 
				+        searchindex = elasticlunr.Index.load(config.index);
			
 
				+
			
 
				+        // Set up events
			
 
				+        searchicon.addEventListener('click', function(e) { searchIconClickHandler(); }, false);
			
 
				+        searchbar.addEventListener('keyup', function(e) { searchbarKeyUpHandler(); }, false);
			
 
				+        document.addEventListener('keydown', function(e) { globalKeyHandler(e); }, false);
			
 
				+        // If the user uses the browser buttons, do the same as if a reload happened
			
 
				+        window.onpopstate = function(e) { doSearchOrMarkFromUrl(); };
			
 
				+        // Suppress "submit" events so the page doesn't reload when the user presses Enter
			
 
				+        document.addEventListener('submit', function(e) { e.preventDefault(); }, false);
			
 
				+
			
 
				+        // If reloaded, do the search or mark again, depending on the current url parameters
			
 
				+        doSearchOrMarkFromUrl();
			
 
				+    }
			
 
				+    
			
 
				+    function unfocusSearchbar() {
			
 
				+        // hacky, but just focusing a div only works once
			
 
				+        var tmp = document.createElement('input');
			
 
				+        tmp.setAttribute('style', 'position: absolute; opacity: 0;');
			
 
				+        searchicon.appendChild(tmp);
			
 
				+        tmp.focus();
			
 
				+        tmp.remove();
			
 
				+    }
			
 
				+    
			
 
				+    // On reload or browser history backwards/forwards events, parse the url and do search or mark
			
 
				+    function doSearchOrMarkFromUrl() {
			
 
				+        // Check current URL for search request
			
 
				+        var url = parseURL(window.location.href);
			
 
				+        if (url.params.hasOwnProperty(URL_SEARCH_PARAM)
			
 
				+            && url.params[URL_SEARCH_PARAM] != "") {
			
 
				+            showSearch(true);
			
 
				+            searchbar.value = decodeURIComponent(
			
 
				+                (url.params[URL_SEARCH_PARAM]+'').replace(/\+/g, '%20'));
			
 
				+            searchbarKeyUpHandler(); // -> doSearch()
			
 
				+        } else {
			
 
				+            showSearch(false);
			
 
				+        }
			
 
				+
			
 
				+        if (url.params.hasOwnProperty(URL_MARK_PARAM)) {
			
 
				+            var words = decodeURIComponent(url.params[URL_MARK_PARAM]).split(' ');
			
 
				+            marker.mark(words, {
			
 
				+                exclude: mark_exclude
			
 
				+            });
			
 
				+
			
 
				+            var markers = document.querySelectorAll("mark");
			
 
				+            function hide() {
			
 
				+                for (var i = 0; i < markers.length; i++) {
			
 
				+                    markers[i].classList.add("fade-out");
			
 
				+                    window.setTimeout(function(e) { marker.unmark(); }, 300);
			
 
				+                }
			
 
				+            }
			
 
				+            for (var i = 0; i < markers.length; i++) {
			
 
				+                markers[i].addEventListener('click', hide);
			
 
				+            }
			
 
				+        }
			
 
				+    }
			
 
				+    
			
 
				+    // Eventhandler for keyevents on `document`
			
 
				+    function globalKeyHandler(e) {
			
 
				+        if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey || e.target.type === 'textarea' || e.target.type === 'text') { return; }
			
 
				+
			
 
				+        if (e.keyCode === ESCAPE_KEYCODE) {
			
 
				+            e.preventDefault();
			
 
				+            searchbar.classList.remove("active");
			
 
				+            setSearchUrlParameters("",
			
 
				+                (searchbar.value.trim() !== "") ? "push" : "replace");
			
 
				+            if (hasFocus()) {
			
 
				+                unfocusSearchbar();
			
 
				+            }
			
 
				+            showSearch(false);
			
 
				+            marker.unmark();
			
 
				+        } else if (!hasFocus() && e.keyCode === SEARCH_HOTKEY_KEYCODE) {
			
 
				+            e.preventDefault();
			
 
				+            showSearch(true);
			
 
				+            window.scrollTo(0, 0);
			
 
				+            searchbar.select();
			
 
				+        } else if (hasFocus() && e.keyCode === DOWN_KEYCODE) {
			
 
				+            e.preventDefault();
			
 
				+            unfocusSearchbar();
			
 
				+            searchresults.firstElementChild.classList.add("focus");
			
 
				+        } else if (!hasFocus() && (e.keyCode === DOWN_KEYCODE
			
 
				+                                || e.keyCode === UP_KEYCODE
			
 
				+                                || e.keyCode === SELECT_KEYCODE)) {
			
 
				+            // not `:focus` because browser does annoying scrolling
			
 
				+            var focused = searchresults.querySelector("li.focus");
			
 
				+            if (!focused) return;
			
 
				+            e.preventDefault();
			
 
				+            if (e.keyCode === DOWN_KEYCODE) {
			
 
				+                var next = focused.nextElementSibling;
			
 
				+                if (next) {
			
 
				+                    focused.classList.remove("focus");
			
 
				+                    next.classList.add("focus");
			
 
				+                }
			
 
				+            } else if (e.keyCode === UP_KEYCODE) {
			
 
				+                focused.classList.remove("focus");
			
 
				+                var prev = focused.previousElementSibling;
			
 
				+                if (prev) {
			
 
				+                    prev.classList.add("focus");
			
 
				+                } else {
			
 
				+                    searchbar.select();
			
 
				+                }
			
 
				+            } else { // SELECT_KEYCODE
			
 
				+                window.location.assign(focused.querySelector('a'));
			
 
				+            }
			
 
				+        }
			
 
				+    }
			
 
				+    
			
 
				+    function showSearch(yes) {
			
 
				+        if (yes) {
			
 
				+            search_wrap.classList.remove('hidden');
			
 
				+            searchicon.setAttribute('aria-expanded', 'true');
			
 
				+        } else {
			
 
				+            search_wrap.classList.add('hidden');
			
 
				+            searchicon.setAttribute('aria-expanded', 'false');
			
 
				+            var results = searchresults.children;
			
 
				+            for (var i = 0; i < results.length; i++) {
			
 
				+                results[i].classList.remove("focus");
			
 
				+            }
			
 
				+        }
			
 
				+    }
			
 
				+
			
 
				+    function showResults(yes) {
			
 
				+        if (yes) {
			
 
				+            searchresults_outer.classList.remove('hidden');
			
 
				+        } else {
			
 
				+            searchresults_outer.classList.add('hidden');
			
 
				+        }
			
 
				+    }
			
 
				+
			
 
				+    // Eventhandler for search icon
			
 
				+    function searchIconClickHandler() {
			
 
				+        if (search_wrap.classList.contains('hidden')) {
			
 
				+            showSearch(true);
			
 
				+            window.scrollTo(0, 0);
			
 
				+            searchbar.select();
			
 
				+        } else {
			
 
				+            showSearch(false);
			
 
				+        }
			
 
				+    }
			
 
				+    
			
 
				+    // Eventhandler for keyevents while the searchbar is focused
			
 
				+    function searchbarKeyUpHandler() {
			
 
				+        var searchterm = searchbar.value.trim();
			
 
				+        if (searchterm != "") {
			
 
				+            searchbar.classList.add("active");
			
 
				+            doSearch(searchterm);
			
 
				+        } else {
			
 
				+            searchbar.classList.remove("active");
			
 
				+            showResults(false);
			
 
				+            removeChildren(searchresults);
			
 
				+        }
			
 
				+
			
 
				+        setSearchUrlParameters(searchterm, "push_if_new_search_else_replace");
			
 
				+
			
 
				+        // Remove marks
			
 
				+        marker.unmark();
			
 
				+    }
			
 
				+    
			
 
				+    // Update current url with ?URL_SEARCH_PARAM= parameter, remove ?URL_MARK_PARAM and #heading-anchor .
			
 
				+    // `action` can be one of "push", "replace", "push_if_new_search_else_replace"
			
 
				+    // and replaces or pushes a new browser history item.
			
 
				+    // "push_if_new_search_else_replace" pushes if there is no `?URL_SEARCH_PARAM=abc` yet.
			
 
				+    function setSearchUrlParameters(searchterm, action) {
			
 
				+        var url = parseURL(window.location.href);
			
 
				+        var first_search = ! url.params.hasOwnProperty(URL_SEARCH_PARAM);
			
 
				+        if (searchterm != "" || action == "push_if_new_search_else_replace") {
			
 
				+            url.params[URL_SEARCH_PARAM] = searchterm;
			
 
				+            delete url.params[URL_MARK_PARAM];
			
 
				+            url.hash = "";
			
 
				+        } else {
			
 
				+            delete url.params[URL_MARK_PARAM];
			
 
				+            delete url.params[URL_SEARCH_PARAM];
			
 
				+        }
			
 
				+        // A new search will also add a new history item, so the user can go back
			
 
				+        // to the page prior to searching. A updated search term will only replace
			
 
				+        // the url.
			
 
				+        if (action == "push" || (action == "push_if_new_search_else_replace" && first_search) ) {
			
 
				+            history.pushState({}, document.title, renderURL(url));
			
 
				+        } else if (action == "replace" || (action == "push_if_new_search_else_replace" && !first_search) ) {
			
 
				+            history.replaceState({}, document.title, renderURL(url));
			
 
				+        }
			
 
				+    }
			
 
				+    
			
 
				+    function doSearch(searchterm) {
			
 
				+
			
 
				+        // Don't search the same twice
			
 
				+        if (current_searchterm == searchterm) { return; }
			
 
				+        else { current_searchterm = searchterm; }
			
 
				+
			
 
				+        if (searchindex == null) { return; }
			
 
				+
			
 
				+        // Do the actual search
			
 
				+        var results = searchindex.search(searchterm, search_options);
			
 
				+        var resultcount = Math.min(results.length, results_options.limit_results);
			
 
				+
			
 
				+        // Display search metrics
			
 
				+        searchresults_header.innerText = formatSearchMetric(resultcount, searchterm);
			
 
				+
			
 
				+        // Clear and insert results
			
 
				+        var searchterms  = searchterm.split(' ');
			
 
				+        removeChildren(searchresults);
			
 
				+        for(var i = 0; i < resultcount ; i++){
			
 
				+            var resultElem = document.createElement('li');
			
 
				+            resultElem.innerHTML = formatSearchResult(results[i], searchterms);
			
 
				+            searchresults.appendChild(resultElem);
			
 
				+        }
			
 
				+
			
 
				+        // Display results
			
 
				+        showResults(true);
			
 
				+    }
			
 
				+
			
 
				+    fetch(path_to_root + 'searchindex.json')
			
 
				+        .then(response => response.json())
			
 
				+        .then(json => init(json))        
			
 
				+        .catch(error => { // Try to load searchindex.js if fetch failed
			
 
				+            var script = document.createElement('script');
			
 
				+            script.src = path_to_root + 'searchindex.js';
			
 
				+            script.onload = () => init(window.search);
			
 
				+            document.head.appendChild(script);
			
 
				+        });
			
 
				+
			
 
				+    // Exported functions
			
 
				+    search.hasFocus = hasFocus;
			
 
				+})(window.search);
			
--- a/book/searchindex.js
+++ b/book/searchindex.js
@@ -0,0 +1 @@
 
				+Object.assign(window.search, {"doc_urls":["chapter_1.html#首页","chapter_2.html#什么是佛教","chapter_3.html#为什么学习佛法","chapter_4.html#如何学习佛法"],"index":{"documentStore":{"docInfo":{"0":{"body":0,"breadcrumbs":0,"title":0},"1":{"body":0,"breadcrumbs":0,"title":0},"2":{"body":0,"breadcrumbs":0,"title":0},"3":{"body":0,"breadcrumbs":0,"title":0}},"docs":{"0":{"body":"","breadcrumbs":"首页 » 首页","id":"0","title":"首页"},"1":{"body":"","breadcrumbs":"什么是佛教？ » 什么是佛教？","id":"1","title":"什么是佛教？"},"2":{"body":"","breadcrumbs":"为什么学习佛法？ » 为什么学习佛法？","id":"2","title":"为什么学习佛法？"},"3":{"body":"","breadcrumbs":"如何学习佛法？ » 如何学习佛法？","id":"3","title":"如何学习佛法？"}},"length":4,"save":true},"fields":["title","body","breadcrumbs"],"index":{"body":{"root":{"df":0,"docs":{}}},"breadcrumbs":{"root":{"df":0,"docs":{}}},"title":{"root":{"df":0,"docs":{}}}},"lang":"English","pipeline":["trimmer","stopWordFilter","stemmer"],"ref":"id","version":"0.9.5"},"results_options":{"limit_results":30,"teaser_word_count":30},"search_options":{"bool":"OR","expand":true,"fields":{"body":{"boost":1},"breadcrumbs":{"boost":1},"title":{"boost":2}}}});
			
--- a/book/searchindex.json
+++ b/book/searchindex.json
@@ -0,0 +1 @@
 
				+{"doc_urls":["chapter_1.html#首页","chapter_2.html#什么是佛教","chapter_3.html#为什么学习佛法","chapter_4.html#如何学习佛法"],"index":{"documentStore":{"docInfo":{"0":{"body":0,"breadcrumbs":0,"title":0},"1":{"body":0,"breadcrumbs":0,"title":0},"2":{"body":0,"breadcrumbs":0,"title":0},"3":{"body":0,"breadcrumbs":0,"title":0}},"docs":{"0":{"body":"","breadcrumbs":"首页 » 首页","id":"0","title":"首页"},"1":{"body":"","breadcrumbs":"什么是佛教？ » 什么是佛教？","id":"1","title":"什么是佛教？"},"2":{"body":"","breadcrumbs":"为什么学习佛法？ » 为什么学习佛法？","id":"2","title":"为什么学习佛法？"},"3":{"body":"","breadcrumbs":"如何学习佛法？ » 如何学习佛法？","id":"3","title":"如何学习佛法？"}},"length":4,"save":true},"fields":["title","body","breadcrumbs"],"index":{"body":{"root":{"df":0,"docs":{}}},"breadcrumbs":{"root":{"df":0,"docs":{}}},"title":{"root":{"df":0,"docs":{}}}},"lang":"English","pipeline":["trimmer","stopWordFilter","stemmer"],"ref":"id","version":"0.9.5"},"results_options":{"limit_results":30,"teaser_word_count":30},"search_options":{"bool":"OR","expand":true,"fields":{"body":{"boost":1},"breadcrumbs":{"boost":1},"title":{"boost":2}}}}