JavaScript is the most in demand programming language on the web today.

Learning how to implement AJAX and use data like JSON formatted data can accelerate the amazing things that JavaScript can do within your web code.

JSON :  JavaScript Object Notation is an open standard technology that is used to transmit data in a human readable format.   JSON is language independent.  It provides a powerful way to move data back and forth.  Learning to use JSON data in JavaScript can open the door to really powerful data handling within your applications.

AJAX : asynchronous JavaScript and XML allows you to send and receive data from other files without page refreshing.  You can display data and information in response to the User interactions within your webpages.  Dynamic content loading without page refreshes.