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.

Lesson Add New Properties to a JavaScript Object. Jump to bottom. Rafael J. Rodriguez edited this page Jan 6, 2017 · 2 revisions. Author. Created by Rafase282. Github | FreeCodeCamp | CodePen | ...

This tutorial will help us about the internal property [[extensible]].this internal property [[extensible]] of an object in javascript, is used to specify whether properties can be add to an object or ...

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 ...