JSON

JSON is short for JavaScript Object Notation, and is a way to store information in an organized, easy-to-access manner. In a nutshell, it gives us a human-readable collection of data that we can access in a really logical manner.

Official Website – http://www.json.org/

Some of the best place to learn Javascript

1) W3Schools Click Here

W3Schools is a web developers site, with tutorials and references on web development languages such as HTML, CSS, JavaScript, PHP, SQL, and JQuery, covering most aspects of web programming.The site derives its name from the World Wide Web (W3), but is not affiliated with the W3C.

W3Schools was originally created in 1998, by Refsnes Data, a Norwegian software development and consulting company.