CnBlogs代码折叠功能
本文展示了CnBlogs网站中使用的CSS控制代码折叠功能的实现方式，通过HTML、CSS和JavaScript代码详细介绍了如何创建可折叠的代码块，特别关注了代码高亮和折叠效果的实现。
代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
<head>
<title> CnBlogs.Com用到的CSS控制的代码折叠功能测试 </title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta name="Generator" content="EditPlus" />
<meta name="Author" content="" />
<meta name="Keywords" content="" />
<meta name="Description" content="" />
</head>
<body>
跟帖关闭调用页面close.htm代码如下：<br>
<div style="border-right: #cccccc 1px solid; padding-right: 5px; border-top: #cccccc 1px solid; padding-left: 4px; font-size: 13px; padding-bottom: 4px; border-left: #cccccc 1px solid; width: 98%; word-break: break-all; padding-top: 4px; border-bottom: #cccccc 1px solid; background-color: #eeeeee">
<img src="https://images.cnblogs.com/outliningindicators/none.gif" align="top"><span style="color: #0000ff"><</span><span style="color: #800000">html</span><span style="color: #0000ff">></span><span style="color: #000000">
<br><img src="https://images.cnblogs.com/outliningindicators/none.gif" align="top"> </span><span style="color: #0000ff"><</span><span style="color: #800000">head</span><span style="color: #0000ff">></span><span style="color: #000000">
<br><img src="https://images.cnblogs.com/outliningindicators/none.gif" align="top"> </span><span style="color: #0000ff"><</span><span style="color: #800000">meta </span><span style="color: #ff0000">http-equiv</span><span style="color: #0000ff">="content-type"</span><span style="color: #ff0000"> content</span><span style="color: #0000ff">="text/html; charset=gb2312"</span><span style="color: #0000ff">></span><span style="color: #000000">
<br><img src="https://images.cnblogs.com/outliningindicators/none.gif" align="top"> </span><span style="color: #0000ff"></</span><span style="color: #800000">head</span><span style="color: #0000ff">></span><span style="color: #000000">
<br><img src="https://images.cnblogs.com/outliningindicators/none.gif" align="top">
<br><img src="https://images.cnblogs.com/outliningindicators/none.gif" align="top"> </span><span style="color: #0000ff"><</span><span style="color: #800000">body</span><span style="color: #0000ff">></span><span style="color: #000000">
<br><img id="codehighlighter1_136_591_open_image" style="display: inline" onclick="this.style.display='none'; codehighlighter1_136_591_open_text.style.display='none'; codehighlighter1_136_591_closed_image.style.display='inline'; codehighlighter1_136_591_closed_text.style.display='inline';" src="https://images.cnblogs.com/outliningindicators/expandedblockstart.gif" align="top"><img id="codehighlighter1_136_591_closed_image" style="display: none" onclick="this.style.display='none'; codehighlighter1_136_591_closed_text.style.display='none'; codehighlighter1_136_591_open_image.style.display='inline'; codehighlighter1_136_591_open_text.style.display='inline';" src="https://images.cnblogs.com/outliningindicators/contractedblock.gif" align="top"> </span><span style="color: #0000ff"><</span><span style="color: #800000">script </span><span style="color: #ff0000">language</span><span style="color: #0000ff">="javascript"</span><span style="color: #0000ff">></span><span id="codehighlighter1_136_591_closed_text" style="border-right: #808080 1px solid; border-top: #808080 1px solid; display: none; border-left: #808080 1px solid; border-bottom: #808080 1px solid; background-color: #ffffff"><img src="https://images.cnblogs.com/dot.gif"></span><span id="codehighlighter1_136_591_open_text" style="display: inline"><span style="color: #000000; background-color: #f5f5f5">
<br><img src="https://images.cnblogs.com/outliningindicators/inblock.gif" align="top"> </span><span style="color: #008000; background-color: #f5f5f5">//</span><span style="color: #008000; background-color: #f5f5f5">控制列表关闭的代码</span><span style="color: #008000; background-color: #f5f5f5">
<br><img src="https://images.cnblogs.com/outliningindicators/inblock.gif" align="top"></span><span style="color: #000000; background-color: #f5f5f5"> </span><span style="color: #0000ff; background-color: #f5f5f5">var</span><span style="color: #000000; background-color: #f5f5f5"> parentfollow</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">parent.document.getelementbyid(</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">follow356</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">)
<br><img src="https://images.cnblogs.com/outliningindicators/inblock.gif" align="top"> </span><span style="color: #0000ff; background-color: #f5f5f5">var</span><span style="color: #000000; background-color: #f5f5f5"> parentfollowtd</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">parent.document.getelementbyid(</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">followtd356</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">)
<br><img src="https://images.cnblogs.com/outliningindicators/inblock.gif" align="top"> </span><span style="color: #0000ff; background-color: #f5f5f5">var</span><span style="color: #000000; background-color: #f5f5f5"> parentfollowimg</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">parent.document.getelementbyid(</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">followimg356</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">)
<br><img src="https://images.cnblogs.com/outliningindicators/inblock.gif" align="top"> </span><span style="color: #0000ff; background-color: #f5f5f5">if</span><span style="color: #000000; background-color: #f5f5f5">(parentfollow)
<br><img id="codehighlighter1_377_422_open_image" onclick="this.style.display='none'; codehighlighter1_377_422_open_text.style.display='none'; codehighlighter1_377_422_closed_image.style.display='inline'; codehighlighter1_377_422_closed_text.style.display='inline';" src="https://images.cnblogs.com/outliningindicators/expandedsubblockstart.gif" align="top"><img id="codehighlighter1_377_422_closed_image" style="display: none" onclick="this.style.display='none'; codehighlighter1_377_422_closed_text.style.display='none'; codehighlighter1_377_422_open_image.style.display='inline'; codehighlighter1_377_422_open_text.style.display='inline';" src="https://images.cnblogs.com/outliningindicators/contractedsubblock.gif" align="top"> </span><span id="codehighlighter1_377_422_closed_text" style="border-right: #808080 1px solid; border-top: #808080 1px solid; display: none; border-left: #808080 1px solid; border-bottom: #808080 1px solid; background-color: #ffffff"><img src="https://images.cnblogs.com/dot.gif"></span><span id="codehighlighter1_377_422_open_text"><span style="color: #000000; background-color: #f5f5f5">{
<br><img src="https://images.cnblogs.com/outliningindicators/inblock.gif" align="top"> parentfollow.style.display</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">none</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">;
<br><img src="https://images.cnblogs.com/outliningindicators/expandedsubblockend.gif" align="top"> }</span></span><span style="color: #000000; background-color: #f5f5f5">
<br><img src="https://images.cnblogs.com/outliningindicators/inblock.gif" align="top"> parentfollowtd.style.display</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">none</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">;
<br><img src="https://images.cnblogs.com/outliningindicators/inblock.gif" align="top"> parentfollowimg.innerhtml</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">'</span><span style="color: #000000; background-color: #f5f5f5"><</span><span style="color: #000000; background-color: #f5f5f5">a href</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">open.htm</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5"> target</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">hiddenframe</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5"> title</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">展开帖子列表</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5"> </span><span style="color: #000000; background-color: #f5f5f5">><</span><span style="color: #000000; background-color: #f5f5f5">img src</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">plus.gif</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5"> border</span><span style="color: #000000; background-color: #f5f5f5">=</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5">0</span><span style="color: #000000; background-color: #f5f5f5">"</span><span style="color: #000000; background-color: #f5f5f5"> </span><span style="color: #000000; background-color: #f5f5f5">></</span><span style="color: #000000; background-color: #f5f5f5">a</span><span style="color: #000000; background-color: #f5f5f5">></span><span style="color: #000000; background-color: #f5f5f5">';
<br><img src="https://images.cnblogs.com/outliningindicators/expandedblockend.gif" align="top"> </span></span><span style="color: #0000ff"></</span><span style="color: #800000">script</span><span style="color: #0000ff">></span><span style="color: #000000">
<br><img src="https://images.cnblogs.com/outliningindicators/none.gif" align="top"> </span><span style="color: #0000ff"></</span><span style="color: #800000">body</span><span style="color: #0000ff">></span><span style="color: #000000">
<br><img src="https://images.cnblogs.com/outliningindicators/none.gif" align="top"></span><span style="color: #0000ff"></</span><span style="color: #800000">html</span><span style="color: #0000ff">></span>
</div>
</body>
</html>
[Ctrl+A 全选 提示:你可先修改部分代码,再点运行代码]
转载于:https://www.cnblogs.com/Dicky/archive/2005/10/26/262324.html
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