mirror of
https://github.com/ruanyf/es6tutorial.git
synced 2025-05-24 10:22:23 +00:00
416 lines
12 KiB
JavaScript
416 lines
12 KiB
JavaScript
var ditto = {
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// page element ids
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content_id: "#content",
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sidebar_id: "#sidebar",
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edit_id: "#edit",
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back_to_top_id: "#back_to_top",
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loading_id: "#loading",
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error_id: "#error",
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// display elements
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sidebar: true,
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edit_button: true,
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back_to_top_button: true,
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save_progress: true, // 保存阅读进度
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search_bar: true,
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// initialize function
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run: initialize
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};
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/**
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* 获取当前hash
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*
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* @param {string} hash 要解析的hash，默认取当前页面的hash，如： nav#类目 => {nav:nav, anchor:类目}
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* @description 分导航和页面锚点
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* @return {Object} {nav:导航, anchor:页面锚点}
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*/
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var getHash = function (hash) {
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hash = hash || window.location.hash.substr(1);
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if (!hash) {
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return {
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nav: '',
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anchor: ''
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}
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}
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hash = hash.split('#');
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return {
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nav: hash[0],
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anchor: decodeURIComponent(hash[1] || '')
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}
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};
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var disqusCode = '<h3>留言</h3><div id="disqus_thread"></div>';
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var menu = new Array();
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function initialize() {
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// initialize sidebar and buttons
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if (ditto.sidebar) {
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init_sidebar_section();
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}
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if (ditto.back_to_top_button) {
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init_back_to_top_button();
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}
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if (ditto.edit_button) {
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init_edit_button();
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}
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// page router
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router();
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$(window).on('hashchange', router);
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}
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function init_sidebar_section() {
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$.get(ditto.sidebar_file, function (data) {
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$(ditto.sidebar_id).html(marked(data));
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if (ditto.search_bar) {
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init_searchbar();
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}
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// 初始化内容数组
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var menuOL = $(ditto.sidebar_id + ' ol');
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menuOL.attr('start', 0);
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menuOL.find('li a').map(function() {
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menu.push(this.href.slice(this.href.indexOf('#')));
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});
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$('#pageup').on('click', function() {
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var hash = getHash().nav;
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for (var i = 0; i < menu.length; i++) {
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if (hash === '') break;
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if (menu[i] === '#' + hash) break;
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}
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location.hash = menu[i - 1]
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});
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$('#pagedown').on('click', function() {
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var hash = getHash().nav;
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for (var i = 0; i < menu.length; i++) {
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if (hash === '') break;
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if (menu[i] === '#' + hash) break;
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}
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location.hash = menu[i + 1];
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});
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}, "text").fail(function() {
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alert("Opps! can't find the sidebar file to display!");
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});
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}
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function init_searchbar() {
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var search = '<form class="searchBox" onSubmit="return searchbar_listener()">' +
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'<input name="search" type="search">' +
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'<input type="image" class="searchButton" src="images/magnifier.jpg" alt="Search" />' +
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// '<a class="searchLink" href="#" target="_blank"><img src="images/magnifier.jpg"></a>' +
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'</form>';
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$(ditto.sidebar_id).find('h2').first().before($(search));
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// $('input.searchButton').click(searchbar_listener);
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// $('input[name=search]').keydown(searchbar_listener);
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}
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function searchbar_listener(event) {
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// event.preventDefault();
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var q = $('input[name=search]').val();
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if (q !== '') {
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var url = 'https://github.com/ruanyf/es6tutorial/search?utf8=✓&q=' + encodeURIComponent(q);
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window.open(url, '_blank');
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win.focus();
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}
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return false;
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/*
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if (event.which === 13) {
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var q = $('input[name=search]').val();
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if (q !== '') {
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var url = 'https://github.com/ruanyf/es6tutorial/search?utf8=✓&q=' + encodeURIComponent(q);
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location.href = url;
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}
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}
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*/
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}
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function init_back_to_top_button() {
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$(ditto.back_to_top_id).show();
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$(ditto.back_to_top_id).on('click', goTop);
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}
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function goTop(e) {
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if(e) e.preventDefault();
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$('html body').animate({
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scrollTop: 0
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}, 200);
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history.pushState(null, null, '#' + location.hash.split('#')[1]);
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}
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function goSection(sectionId){
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$('html, body').animate({
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scrollTop: ($('#' + sectionId).offset().top)
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}, 300);
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}
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function init_edit_button() {
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if (ditto.base_url === null) {
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alert("Error! You didn't set 'base_url' when calling ditto.run()!");
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} else {
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$(ditto.edit_id).show();
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$(ditto.edit_id).on("click", function() {
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var hash = location.hash.replace("#", "/");
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if (hash === "") {
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hash = "/" + ditto.index.replace(".md", "");
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}
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window.open(ditto.base_url + hash + ".md");
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// open is better than redirecting, as the previous page history
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// with redirect is a bit messed up
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});
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}
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}
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function replace_symbols(text) {
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// replace symbols with underscore
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return text
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.replace(/, /g, ',')
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.replace(/[&\/\\#,.+=$~%'":*?<>{}\ \]\[]/g, "-")
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.replace(/[()]/g, '');
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}
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function li_create_linkage(li_tag, header_level) {
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// add custom id and class attributes
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html_safe_tag = replace_symbols(li_tag.text());
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li_tag.attr('data-src', html_safe_tag);
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li_tag.attr("class", "link");
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// add click listener - on click scroll to relevant header section
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li_tag.click(function(e) {
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e.preventDefault();
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// scroll to relevant section
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var header = $(
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ditto.content_id + " h" + header_level + "." + li_tag.attr('data-src')
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);
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$('html, body').animate({
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scrollTop: header.offset().top
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}, 200);
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// highlight the relevant section
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original_color = header.css("color");
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header.animate({ color: "#ED1C24", }, 500, function() {
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// revert back to orig color
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$(this).animate({color: original_color}, 2500);
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});
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history.pushState(null, null, '#' + location.hash.split('#')[1] + '#' + li_tag.attr('data-src'));
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});
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}
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function create_page_anchors() {
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// create page anchors by matching li's to headers
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// if there is a match, create click listeners
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// and scroll to relevant sections
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// go through header level 1 to 3
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for (var i = 2; i <= 4; i++) {
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// parse all headers
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var headers = [];
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$('#content h' + i).map(function() {
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var content = $(this).text();
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headers.push(content);
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$(this).addClass(replace_symbols(content));
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this.id = replace_symbols(content);
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$(this).hover(function () {
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$(this).html(content +
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' <a href="#' + location.hash.split('#')[1] +
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'#' +
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replace_symbols(content) +
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'" class="section-link">§</a> <a href="#' +
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location.hash.split('#')[1] + '" onclick="goTop()">⇧</a>');
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}, function () {
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$(this).html(content);
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});
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$(this).on('click', 'a.section-link', function(event) {
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event.preventDefault();
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history.pushState(null, null, '#' + location.hash.split('#')[1] + '#' + replace_symbols(content));
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goSection(replace_symbols(content));
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});
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});
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if ((i === 2) && headers.length !== 0) {
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var ul_tag = $('<ol></ol>')
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.insertAfter('#content h1')
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.addClass('content-toc')
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.attr('id', 'content-toc');
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for (var j = 0; j < headers.length; j++) {
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var li_tag = $('<li></li>').html('<a href="#' + location.hash.split('#')[1] + '#' + headers[j] + '">' + headers[j] + '</a>');
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ul_tag.append(li_tag);
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li_create_linkage(li_tag, i);
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}
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}
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}
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}
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function normalize_paths() {
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// images
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$(ditto.content_id + " img").map(function() {
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var src = $(this).attr("src").replace("./", "");
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if ($(this).attr("src").slice(0, 5) !== "http") {
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var pathname = location.pathname.substr(0, location.pathname.length - 1);
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var url = location.hash.replace("#", "");
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// split and extract base dir
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url = url.split("/");
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var base_dir = url.slice(0, url.length - 1).toString();
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// normalize the path (i.e. make it absolute)
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$(this).attr("src", pathname + base_dir + "/" + src);
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}
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});
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}
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function show_error() {
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console.log("SHOW ERORR!");
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$(ditto.error_id).show();
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}
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function show_loading() {
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$(ditto.loading_id).show();
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$(ditto.content_id).html(''); // clear content
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// infinite loop until clearInterval() is called on loading
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var loading = setInterval(function() {
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$(ditto.loading_id).fadeIn(1000).fadeOut(1000);
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}, 2000);
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return loading;
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}
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function router() {
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var path = location.hash.replace(/#([^#]*)(#.*)?/, './$1');
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var hashArr = location.hash.split('#');
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var sectionId;
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if (hashArr.length > 2 && !(/^comment-/.test(hashArr[2]))) {
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sectionId = hashArr[2];
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}
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if (ditto.save_progress && store.get('menu-progress') !== location.hash) {
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store.set('menu-progress', location.hash);
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store.set('page-progress', 0);
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}
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// default page if hash is empty
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if (location.pathname === "/index.html") {
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path = location.pathname.replace("index.html", ditto.index);
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normalize_paths();
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} else if (path === "") {
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path = location.pathname + ditto.index;
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normalize_paths();
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} else {
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path = path + ".md";
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}
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// 取消scroll事件的监听函数
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// 防止改变下面的变量perc的值
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$(window).off('scroll');
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// otherwise get the markdown and render it
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var loading = show_loading();
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$.get(path, function(data) {
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$(ditto.error_id).hide();
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$(ditto.content_id).html(marked(data) + disqusCode);
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if ($(ditto.content_id + " h1").text() === ditto.document_title) {
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document.title = ditto.document_title;
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} else {
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document.title = $(ditto.content_id + " h1").text() + " - " + ditto.document_title;
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}
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normalize_paths();
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create_page_anchors();
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// 完成代码高亮
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$('#content code').map(function() {
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Prism.highlightElement(this);
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});
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// 加载disqus
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(function() {
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// http://docs.disqus.com/help/2/
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window.disqus_shortname = 'es6';
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window.disqus_identifier = (location.hash ? location.hash.replace("#", "") : 'READEME');
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window.disqus_title = $(ditto.content_id + " h1").text();
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window.disqus_url = 'http://es6.ruanyifeng.com/' + (location.hash ? location.hash.replace("#", "") : 'README');
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// http://docs.disqus.com/developers/universal/
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(function() {
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var dsq = document.createElement('script');
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dsq.type = 'text/javascript';
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dsq.async = true;
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dsq.src = 'http://' + window.disqus_shortname + '.disqus.com/embed.js';
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(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
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})();
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})();
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var perc = ditto.save_progress ? store.get('page-progress') || 0 : 0;
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if (sectionId) {
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$('html, body').animate({
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scrollTop: ($('#' + decodeURI(sectionId)).offset().top)
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}, 300);
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} else {
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if (location.hash !== '' || Boolean(perc)) {
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if (!Boolean(perc)) {
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$('html, body').animate({
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scrollTop: ($('#content').offset().top + 10)
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}, 300);
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$('html, body').animate({
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scrollTop: ($('#content').offset().top)
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}, 300);
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} else {
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$('html, body').animate({
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scrollTop: ($('body').height()-$(window).height())*perc
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}, 200);
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}
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}
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}
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if (location.hash === '' || location.hash === menu[0]) {
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$('#pageup').css('display', 'none');
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} else {
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$('#pageup').css('display', 'inline-block');
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}
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if (location.hash === menu[(menu.length - 1)]) {
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$('#pagedown').css('display', 'none');
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} else {
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$('#pagedown').css('display', 'inline-block');
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}
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(function() {
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var $w = $(window);
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var $prog2 = $('.progress-indicator-2');
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var wh = $w.height();
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var h = $('body').height();
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var sHeight = h - wh;
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$w.on('scroll', function() {
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window.requestAnimationFrame(function(){
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var perc = Math.max(0, Math.min(1, $w.scrollTop() / sHeight));
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updateProgress(perc);
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});
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});
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function updateProgress(perc) {
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$prog2.css({width: perc * 100 + '%'});
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ditto.save_progress && store.set('page-progress', perc);
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}
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}());
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}).fail(function() {
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show_error();
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}).always(function() {
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clearInterval(loading);
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$(ditto.loading_id).hide();
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});
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}
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