JavaScript’s reduce is one of the most useful array methods that should be in a developer’s arsenal. Introduced in ES5, it’s somewhat similar to for…each and map methods that are used with ...

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.

THE window OBJECT The "window" object is a built-in JavaScript object that represents the entire browser window. The window object contains various properties, methods, and objects that give you ...