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.

What is JSON (JavaScript Object Notation)? JSON (JavaScript Object Notation) is a text-based, human-readable data interchange format used to exchange data between web clients and web servers. The ...

Classes are the most common way to define object types, and most languages that use objects—including Java, Python, and C++—support classes with a similar syntax. (JavaScript also uses ...