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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>context | jQuery API 中文手册</title>
<meta name="author" content="jQuery 中文手册 - hemin.cn/jq/">
<meta name="description" content="jQuery中文手册(在线版),作者:hemin,在线手册:hemin.cn/jq/,下载:hemin.cn/jq/downloads/">
<link type="text/css" rel="stylesheet" href="style/style.css" tppabs="http://hemin.cn/jq/style/style.css" />
<script type="text/javascript" src="js/jquery.min.js" tppabs="http://hemin.cn/jq/js/jquery.min.js"></script>
<script type="text/javascript" src="js/js.js" tppabs="http://hemin.cn/jq/js/js.js"></script>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-15318881-10', 'pandoraui.github.io');
ga('send', 'pageview');
</script>
</head>
<body id="split">
<div id="content" class="a2">
<div rel="context">
<h2><span>返回值:Element</span>context</h2>
<h3><em>V1.3</em>概述</h3>
<div class="desc">
<p>返回传给jQuery()的原始的DOM节点内容,即jQuery()的第二个参数。如果没有指定,那么context指向当前的文档(document)。</p>
<div class="longdesc">
<p>可以与<span title="Core/selector">selector</span>一起使用,用于精确检测选择器查询情况。这两个属性对插件开发人员很有用。</p>
</div>
</div>
<div class="example">
<h3>示例</h3>
<span id="f_ad2"></span>
<h4>描述:</h4>
<p>检测使用的文档内容</p>
<h5>jQuery 代码:</h5>
<pre><code>$("ul")
.append("<li>" + $("ul").context + "</li>")
.append("<li>" + $("ul", document.body).context.nodeName + "</li>");</code></pre>
<h5>结果:</h5>
<pre><code>[object HTMLDocument] //如果是IE浏览器,则返回[object]
BODY</code></pre>
</div>
</div>
</div>
</body>
</html>