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<%@ page pageEncoding="utf-8"%>
<html>
<head>
<meta charset="utf-8">
<title>邮箱登录判断</title>
</head>
<head>
<script>
function validateForm(){
var x=document.forms["myForm"]["email"].value;
var atpos=x.indexOf("@");
var dotpos=x.lastIndexOf(".");
if (atpos<1 || dotpos<atpos+2 || dotpos+2>=x.length){
alert("不是一个有效的 e-mail 地址");
return false;
}
}
</script>
</head>
<body>
<form name="myForm" action="demo-form.php" onsubmit="return validateForm();" method="post">
Email: <input type="text" name="email">
<input type="submit" value="提交">
</form>
</body>
</html>
时间： 2024-08-25 08:27:27