Here’s a sample JavaScript function that shows how to validate an email address .
How to Validate Email Address in JavaScript ?
function ValidateEmail(email)
{
var result = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
return result.test(email);
}