Validate email address textbox using JavaScript

Question

I was trying to validate an email address whenever user have entered one. I have tried with the below code, but it is not working:

 function check(email) {

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

            //var address = document.getElementById[email].value;

            if (reg.test(email) == false) 

            {

                alert('Invalid Email Address');

                return (false);

            }

 }

Can anyone help me how I can able to solve this issue?

Answer 1

Basically, the code for the regex is correct, but you need to add the following line in your TextField:

<input type="text" onblur="validateEmail(this);" />

I hope this will help.

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