Javascript email validation problem in MVC

you can use below syntax for email regular expression validation in jquery:

var regx = /[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}/igm;
if(regx .test(email here)){ //do something }

Email Validation Expression : \w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*

Hope this would help you !! :)

try this one

 <script type="text/javascript">
        function validateCaseSensitiveEmail() {

            var email = document.getElementById('txtEmail').value;
            var reg = /^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/;
            if (reg.test(email)) {
                alert("Valid");
            }
            else {
                alert("In Valid");
            }
        } 
</script>

Try below code to validate your email:

function validatetoemail(my_email) {
var filter = /^[_a-z0-9-]+(\.[_a-z0-9-]+)*@@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/;
if (filter.test(my_email)) {
return true;
}
else {
return false;
}
}

hope it will work also for you.