Custom JavaScript Email Validation

Below is simple yet powerful custom javascript email validation function which allows usual user@domain address for your email field.





function validateEmail(txtValue) {

var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;

if(reg.test(txtValue) == false) {
return false;
}
return true;

}