Simple email validation in javascript:
This is a script for validate form box to ensure that the user entered a valid email address. If not, the form submition is canceled, and the user prompted to re-enter a valid email address.
This script validate the following assumptions:
Javascript code for validate email address:
Demo:
This is a script for validate form box to ensure that the user entered a valid email address. If not, the form submition is canceled, and the user prompted to re-enter a valid email address.
This script validate the following assumptions:
- The mailID should contains a least one character procedding the "@"
- The mailID should contains a "@" following the procedding character(s)
- The mailID should contains at least one character following the "@", followed by a dot (.), followed by either a two character or three character string .
<html>
<head>
<title>Email Validation</title>
<script type="text/javascript">
var error;
function isValidEmail(){
var str=document.mailValidation.txtEmail.value
var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
if (filter.test(str)){
alert(str +" is a valid email address");
error=false;
}
else{
alert("Please enter a valid email address!");
error=false;
}
return (error)
}
</script>
</head>
<body>
<form name="mailValidation"> Enter Your Email Address:<br /> <input type="text" size="15" name="txtEmail"> <input type="submit" value="Submit" onclick="return isValidEmail();"> </form>
</body>
</html>
Demo:
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