JavaScript::E-mail Validation

E-mail Validation

Head:

<script type="text/javascript">
function validateEmail(theForm) {
if (/^w+([.-]?w+)*@w+([.-]?w+)*(.w{2,3})+$/.test(theForm.email-id.value)){
return(true);
}
alert("Invalid e-mail address! Please enter again carefully!.");
return(false);
}
</script>

Body:

<form onSubmit="return validateEmail(this);" action="">
E-mail Address:
<input type="text" name="emailid" />
<input type="submit" value="Submit" />
<input type="reset" value="Reset" />
</form>

This snippet will validate that a properly formatted E-mail address is entered in a form, it cannot guarantee that the E-mail address is real, there is no way to check for that with JavaScript.