<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>EMail验证</title>
<script language="javascript" type="text/javascript">
function checkEMail()
{
var email = document.getElementById("txtEMail").value;
var re = /^[a-zA-Z0-9]([a-zA-Z0-9]*[-_.]?[a-zA-Z0-9]+)+@([a-zA-Z0-9]+\.)+[a-zA-Z]{2,}$/;
if(email==null||email=="")
{
alert("EMail不能为空!");
return false;
}
if(!re.test(email))
{
alert("EMail格式不正确!");
return false;
}
return true;
}
</script>
</head>
<body>
<form id="form1">
请输入EMail:<input name="eMail" type="text" id="txtEMail" />
<br/>
<input name="" type="button" value="验证" onclick="return checkEMail()" />
</form>
</body>
</html>