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<!DOCTYPE HTML>
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<meta name="author" content="http://m.survivalescaperooms.com/" />
<title>is()函數-武林網</title>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script>
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$(document).ready(function(){
alert($("li").parent().is(document.getElementById("parent")))
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<ul id="parent">
<li>div+css專區</li>
<li>jQuery專區</li>
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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8"/>
<meta name="author" content="http://m.survivalescaperooms.com/" />
<title>is()函數-武林網</title>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script>
<script type="text/javascript">
$(document).ready(function(){
alert($("li").parent().is($("#parent")))
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<body>
<div>
<ul id="parent">
<li>div+css專區</li>
<li>jQuery專區</li>
</ul>
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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8"/>
<meta name="author" content="http://m.survivalescaperooms.com/" />
<title>is()函數-武林網</title>
<script type="text/javascript" src="mytest/jQuery/jquery-1.8.3.js"></script>
<script type="text/javascript">
$(document).ready(function(){
alert($("li").parent().is(function(index){return $("ul").attr("id")=="parent"}))
})
</script>
</head>
<body>
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<ul id="parent">
<li>div+css專區</li>
<li>jQuery專區</li>
</ul>
</div>
</body>
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