检测邮箱地址是否合法 Check Mail Address (For: IE5+、FF1.06、Opera 7+ ...)[


答案：
<!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="gb2312">  
<head>  
<head>  
<title> Code：检测邮箱地址是否合法 Check Mail Address (For: IE5+、FF1.06、Opera 7+ ...)</title>  
<meta http-equiv="content-type" content="text/html; charset=gb2312" />  
<meta name="author" content="枫岩,CNLei.y.l@gmail.com">  
<meta name="keywords" content="邮箱地址,合法,Check Mail Address" />  
<meta name="description" content="检测邮箱地址是否合法 Check Mail Address (For: IE5+、FF1.06、Opera 7+ ..." />  
<style type="text/css" media="all">  
 body {font-size:14px;}  
</style>  
</head>  
<body>  
<form action="">  
<input name="MyMail" type="text" size="25" />  
<input type="submit" onclick="return ChkMail(this.form.MyMail)" value="测试" />  
</form>  

<script type="text/javascript">  
function ChkMail(o){  
var reEml = /^[\w\-\.]+@[a-z0-9]+(\-[a-z0-9]+)?(\.[a-z0-9]+(\-[a-z0-9]+)?)*\.[a-z]{2,4}$/i;   
var isOk=reEml.test(o.value);  
if (isOk==false){  
 alert("请输入正确的邮箱地址！");  
 o.focus();  
}  
 return isOk  
}  
</script>  
</body>  
</html>
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