In this article we are going to create a custom registration form in magento with Ajax functionality. The default magento registration form does the email verification of the user in the server side i.e After form submission. We are going to make it interactive.
Step 1: After creating the basic module,we need to override the default register.phtml and include our own template file. Magento has a built in prototype java script library support i.e prototype.js. In this example we are going to use Ajax with built in prototype.js library. The same result can also be achieved using jQuery but it requires a few more steps and also we need to write jQuery code to avoid conflicting with prototype library.
Step 2: We need a controller action for processing the client request through Ajax, it fetches the email address entered by user and it passes to the controller action. The controller action will check the email with the database and returns a message depending upon the condition.