<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script type="text/javascript" src="jquery-1.4.2.js">
<!--
//-->
</script>
<script type="text/javascript">
<!--
$(document).ready(function(){
$("#btnToogle").click(function(){
$("#dvTest").toggle();
alert( $("#dvTest").is(":visible")); //判断元素显示或隐藏状态
});
$("#btnTestIs").click(function(e){
// alert( $(e.target).is("input") ); //判断元素的标名称
alert( $("#btnToogle").parent().is("body") );
});
});
//-->
</script>
</head>
<body>
<input type="button" value="toogle div" id="btnToogle">
<div style="50px; height:100px; border:solid 1px red; background-color:blue;" id="dvTest">
</div>
<br />
<hr />
<input type="button" value="toogle div" id="btnTestIs">
</body>
</html>