Built-in JavaScript objects and functions are ones you'll use all the time. Here's how to use Object, JSON, String, Math, Date, and console in your JavaScript programs.

JavaScript – JSON is written in JavaScript and was originally defined to pull out the convenient syntax used in JavaScript as a data format in itself, for easy interoperability with JavaScript.

For those who might have no idea what JSON is, here is a basic guide for beginners that touches upon JSON Document Database & Code examples.

JavaScript automatically transforms the JSON-formatted object into a corresponding JavaScript object. How does this approach differ from traditional AJAX techniques?