Check email javascript
Download source : http://www.mediafire.com/?lzq6e07vcdjnvaq
Bạn cũng có thể dùng mã ở đây :
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<script type="text/javascript">
function check_email(email_id,err_id){
emailRegExp = /^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.([a-z]){2,4})$/;
var err_mail='Email không hợp lệ';
if(emailRegExp.test(document.getElementById(email_id).value)){
//alert('true');
return true;
}else{
alert(err_mail);
return false;
}
}
</script>
<form action="" method="get" onsubmit="return check_email('email','err_msg');">
<input type="text" name="email" id="email"/>
<input type="submit" name="send" value="Send" />
</form>
</html>
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nguồn http://snippets.dzone.com/posts/show/4290
