Sep 25, 2023 · This chapter documents all of JavaScript's standard, built-in objects, including their methods and properties. The term "global objects" (or ...

Object · String · Number - JavaScript · Array

Sep 30, 2023 · The Object type represents one of JavaScript's data types. It is used to store various keyed collections and more complex entities.

Array · Standard built-in objects · Object.keys() · Map

Dec 18, 2023 · The Array object, as with arrays in other programming languages, enables storing a collection of multiple items under a single variable name ...

Array.prototype.map() · Array.prototype.find() · Array.prototype.indexOf()

Sep 25, 2023 · The String object is used to represent and manipulate a sequence of characters.

Nov 27, 2023 · A function to execute for each element in the array. Its return value is added as a single element in the new array. The function is called with ...

Try it · Syntax · Description · Examples

Jan 30, 2024 · The Set object lets you store unique values of any type, whether primitive values or object references.

Set.prototype.forEach() · Set.prototype.size · Set.prototype.has() · Set.prototype.add()

Mar 11, 2024 · The Map object holds key-value pairs and remembers the original insertion order of the keys. Any value (both objects and primitive values) ...

Array.prototype.map() · Map.prototype.forEach() · Map.prototype.set()

Nov 7, 2023 · The Proxy object enables you to create a proxy for another object, which can intercept and redefine fundamental operations for that object.

A JavaScript date is fundamentally specified as the time in milliseconds that has elapsed since the epoch, which is defined as the midnight at the beginning of ...

Date.now() · Date.parse() · toLocaleDateString() · Date.prototype.toString()

Sep 11, 2023 · The Function object provides methods for functions. In JavaScript, every function is actually a Function object.

Function: name · Function.prototype.call() · Function.prototype.apply()