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cnblogs-article-nav.js
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/*
功能： 自动为博客园文章生成目录
原理： 抓取页面中的h1,h2,h3，生成<li>
参考： https://www.cnblogs.com/marvin/p/ExtendWizNoteAutoNnavigation.html
https://www.cnblogs.com/asxinyu/p/Bolg_Category_For_BlogBeauty.html
*/
$(document).ready(function () {
//mobile detect 如果是移动平台，不显示侧边栏
var md = new MobileDetect(window.navigator.userAgent);
if (md.mobile()) {
//$('#mainContent').css('style','1');
// console.log("you platform is mobile");
return;
} else {
//console.log("you platform not mobile ");
buildCatlog();
buildTocTable();
}
});
//=============== cnblogs生成右侧目录 start ===============
function buildCatlog() {
var body = $('body'),
cnblogs_post_body = 'cnblogs_post_body',
sideNavBody = 'sideToolbar',
sideCatalog = 'sideCatalog',
f = 'sideCatalog-catalog',
sideCatalogCtrl = 'sideCatalogBtn',
h = 'sideToolbar-up',
//默认显示文章目录
//navcontaint = '<div id="sideToolbar">\<div class="sideCatalogBg"id="sideCatalog">\<div id="sideCatalog-sidebar">\<div class="sideCatalog-sidebar-top"></div>\<div class="sideCatalog-sidebar-bottom"></div>\</div>\<div id="sideCatalog-catalog">\<ul class="nav"style="width:300px;zoom:1">\</ul>\</div>\</div>\</div>\<a href="javascript:void(0);" title="[隐藏/显示]目录" id="sideCatalogBtn" class="sideCatalogBtnDisable"></a>',
navcontaint = "<div id='sideToolbar'>\
<div class='sideCatalogBg' id='sideCatalog'>\
<div id='sideCatalog-sidebar'>\
<div class='sideCatalog-sidebar-top'></div>\
<div class='sideCatalog-sidebar-bottom'></div>\
</div>\
<div id='sideCatalog-catalog'>\
<ul class='nav' style='width:300px;zoom:1'>\</ul>\
</div>\
</div>\
</div>\
<a href='javascript:void(0);' title='[隐藏/显示]目录' id='sideCatalogBtn' class='sideCatalogBtnDisable'></a>",
strAppendHtml = '',//生成的目录html代码
scrollDown = 500,
lIndex = 0,
m = 0,
n = 0,
header, p = 18,
isSpiltStr = true, //文字过长时，截取使用...替换
r = true,
cnblogs_post_body_flag = $('#' + cnblogs_post_body);
//只有文章页面才会生成
if (cnblogs_post_body_flag.length === 0) {
return
};
body.append(navcontaint);
header = cnblogs_post_body_flag.find(':header');
if (header.length > p) {
r = false;
var t = cnblogs_post_body_flag.find('h2');
var u = cnblogs_post_body_flag.find('h3');
if (t.length + u.length > p) {
//q = false //如果h2和h3太多，依然要生成h3
}
};
header.each(function (t) {
var u = $(this),
v = u[0];
var title = u.text();
var text = u.text();
u.attr('id', 'autoid-' + lIndex + '-' + m + '-' + n)
//if (!u.attr('id')) {
// u.attr('id', 'autoid-' + l + '-' + m + '-' + n)
//};
/*文章目录节点：
标题1/标题2: <li>
标题3: h2Offset
标题4: h3Offset
*/
if (v.localName === 'h1' || v.localName === 'h2') {
lIndex++;
m = 0;
//超过30字，后面加....
if (text.length > 30) text = text.substr(0, 30) + "...";
//h1,h2,h3 如果需要在前面自动生成序号就添加<li><span>' + l + '. </span>)
//j += '<li><span>' + l + '. </span><a href="#' + u.attr('id') + '" title="' + title + '">' + text + '</a><span class="sideCatalog-dot"></span></li>';
strAppendHtml += '<li><a href="#' + u.attr('id') + '" title="' + title + '">' + text + '</a><span class="sideCatalog-dot"></span></li>';
} else if (v.localName === 'h3') {
m++;
n = 0;
if (isSpiltStr) {
if (text.length > 28) text = text.substr(0, 28) + "...";
strAppendHtml += '<li class="h2Offset"><a href="#' + u.attr('id') + '" title="' + title + '">' + text + '</a></li>';
}
} else if (v.localName === 'h4') {
n++;
if (r) {
if (text.length > 26) text = text.substr(0, 26) + "...";
strAppendHtml += '<li class="h3Offset"><a href="#' + u.attr('id') + '" title="' + title + '">' + text + '</a></li>';
}
}
});
$('#' + f + '>ul').html(strAppendHtml);
body.data('spy', 'scroll');
body.data('target', '.sideCatalogBg');
$('body').scrollspy({
target: '.sideCatalogBg'
});
$sideCatelog = $('#' + sideCatalog);
$('#' + sideCatalogCtrl).on('click', function () {
if ($(this).hasClass('sideCatalogBtnDisable')) {
$("#" + sideNavBody).css('display', 'block')
$('#' + sideCatalogCtrl).title = "隐藏目录";
} else {
$("#" + sideNavBody).css('display', 'none')
$('#' + sideCatalogCtrl).title = "显示目录";
};
$(this).toggleClass('sideCatalogBtnDisable')
});
$('#' + h).on('click', function () {
$("html,body").animate({
scrollTop: 0
}, 500)
});
//默认隐藏目录
$("#" + sideNavBody).css('display', 'none')
$(this).toggleClass('sideCatalogBtnDisable')
$(window).scroll(function () {
var t = $(window).scrollTop();
//当前文章有目录且往下滚动x像素就自动显示文章目录
if (t > scrollDown && header.length>2) {
$('#' + sideNavBody).css('display', 'block')
} else {
$('#' + sideNavBody).css('display', 'none')
}
})
}
//=============== cnblogs生成右侧目录 end ===============
//=============== 在文章正文顶部生成TOC start ===============
function buildTocTable() {
var hArray = $('#cnblogs_post_body').find('h1,h2,h3,h4,h5,h6');
if (hArray.length < 2) { return; }
var autoOpenNum = 8 //自动展开的条目
//.cnblogs_toc ol 控制展开或关闭，默认关闭它
var htmlCode = "<div style='clear:both'></div>\
<div class='cnblogs_toc'>\
<p style='text-align:left;margin:0;'>\
<span style='float:left; text-indent:0;'>\
<a id='TocTitle' href='#' onclick='javascript:return OnTitleShowToc(this);' title='系统根据文章中H1到H6标签自动生成文章目录'>文章目录[点击展开](?)</a>\
</span>\
<a id='TocTitleSymbol' href='#' onclick='javascript:return OnTitleSymbolShowToc(this);' title='展开'>[+]</a>\
</p>\
<ol style='display:none;margin-left:14px;padding-left:14px;line-height:160%;'>";
var old_h = 0, ol_cnt = 0;
for (var i = 0; i < hArray.length; i++) {
var h = parseInt(hArray[i].tagName.substr(1), 10);
if (!old_h)
old_h = h;
if (h > old_h) {
htmlCode += '<ol>';
ol_cnt++;
}
else if (h < old_h && ol_cnt > 0) {
htmlCode += '</ol>';
ol_cnt--;
}
if (h == 1) {
while (ol_cnt > 0) {
htmlCode += '</ol>';
ol_cnt--;
}
}
old_h = h;
var tit = hArray.eq(i).text().replace(/^\d+[.、\s]+/g, '');
tit = tit.replace(/[^a-zA-Z0-9_\-\s\u4e00-\u9fa5]+/g, '');
if (tit.length < 100) {
htmlCode += '<li><a href="#t' + i + '">' + tit + '</a></li>';
hArray.eq(i).html('<a name="t' + i + '"></a>' + hArray.eq(i).html());
}
}
while (ol_cnt > 0) {
htmlCode += '</ol>';
ol_cnt--;
}
htmlCode += '</ol></div>';
htmlCode += '<div style="clear:both"><br /></div>';
$(htmlCode).insertBefore($('#cnblogs_post_body'));
//体验优化：如果目录数目过多则自动关闭，否则展开，利于阅读大纲
if (hArray.length <= autoOpenNum) {
$("#TocTitle").click();
}
}
var isOpendToc = false;
function UpdateTocTitle() {
if (isOpendToc) {
$("#TocTitleSymbol").attr('title', '收起').html('[-]');
$("#TocTitle").html('文章目录[点击收起](?)');
} else {
$("#TocTitleSymbol").attr('title', '展开').html('[+]');
$("#TocTitle").html('文章目录[点击展开](?)');
}
}
function OnTitleShowToc(e) {
if (!isOpendToc) {
$(e).parent().parent().next().show();
isOpendToc = true;
} else {
$(e).parent().parent().next().hide();
isOpendToc = false;
}
UpdateTocTitle();
e.blur();
return false;
}
function OnTitleSymbolShowToc(e) {
if (!isOpendToc) {
$("#TocTitleSymbol").parent().next().show();
isOpendToc = true;
} else {
$("#TocTitleSymbol").parent().next().hide();
isOpendToc = false;
}
UpdateTocTitle();
e.blur();
return false;
}
//=============== 在文章正文顶部生成TOC end ===============