Often in registration form we need a a feature to check the live availability of user. Obviously it is worth that after submitting all the details to tell the user that user already registered. It's better approach to tell the user while filling the form.
In this article, we will see a live check availability of email id by using AJAX, jQuery, and MySQL.
You will require to enter the email id and you will be able to check weather the email id already exist or not while typing the email id.
Here is the HTML and jQuery part. ...