<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>jquery 弥补ie6不支持input:hover状态</title>
<style type="text/css">
input{border:1px solid #eee;}
input:focus{border:1px solid #ccc;}
.focus{border:1px solid #ccc;}
</style>
<script type="text/javascript" src="jquery-1.11.1.min.js"></script>
</head>
<body>
<form action="#" method="get">
<label for="name">用户名</label>
<input id="name" type="text"/>
<label for="pass">密码</label>
<input id="pass" type="text"/>
</form>
<script type="text/javascript">
$(function(){
$(":input").focus(function(){
$(this).addClass("focus");
}).blur(function(){
$(this).removeClass("focus");
});
});
</script>
</body>
</html>
原文：http://www.cnblogs.com/Better-Me/p/4718470.html