This part of the JavaScript section on MDN serves as a repository of facts about the JavaScript language. Read more about this reference.

Built-ins

JavaScript standard built-in objects, along with their methods and properties.

Number BigInt Math Date

Text processing String RegExp

Indexed Collections Array Int8Array Uint8Array Uint8ClampedArray Int16Array Uint16Array Int32Array Uint32Array Float32Array Float64Array BigInt64Array BigUint64Array

Keyed collections Map Set WeakMap WeakSet



Statements

JavaScript statements and declarations

Other debugger import label with



Expressions and operators

JavaScript expressions and operators.

Functions

This chapter documents how to work with JavaScript functions to develop your applications.

Additional reference pages