javascript data types list

A JavaScript variable can hold 8 types of data.

developer.mozilla.org › en-US › docs › Web › JavaScript › Guide › Data_structures

JavaScript data types and data structures - JavaScript | MDN

This article attempts to list the built-in data structures available in JavaScript and what properties they have. These can be used to build other data structures. The language overview offers a similar summary of the common data types, but with more comparisons to other languages.

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JavaScript.info

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Data types

There are 8 basic data types in JavaScript.

Programiz

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JavaScript Data Types (with Examples)

Visit JavaScript null and undefined to learn more. A Symbol is a unique and primitive value. This data type was introduced in ES6.

GeeksforGeeks

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JavaScript Data Types - GeeksforGeeks

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BigInt is a built-in object that provides a way to represent whole numbers greater than 253. The largest number that JavaScript can reliably represent with the Number primitive is 253, which is represented by the MAX_SAFE_INTEGER constant. ... The data types that are derived from primitive data types are known as non-primitive data types.

Published April 24, 2019

BrainStation®

brainstation.io › learn › javascript › data-types

JavaScript Data Types (2026 Tutorial & Examples) | BrainStation®

February 4, 2025 - Number in JavaScript represents integer numbers or a floating-point number. A number type could also be +Infinity, -Infinity, and NaN (not a number). The string type is used to represent textual data.

Edureka

edureka.co › blog › data-types-in-javascript

What are the Different Data Types in JavaScript - Edureka

February 11, 2025 - A data type in a language defines the type of data a variable can hold. In this article, we will discuss the various data types in JavaScript in detail: ... JavaScript has seven types. Types are values that JavaScript can have. Below is a list of data types that JavaScript can have:

Javatpoint

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JavaScript data types - javatpoint

JavaScript data types tutorial for beginners and professsionals with example, JavaScript primitive data types, JavaScript primitive data types, event, validation, object loop, array, document, tutorial

W3Schools

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JavaScript Datatypes

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JavaScript data types and data structures - JavaScript | MDN

For example, indexOf (searching a value in the array) or push (adding an element to the array), etc. This makes Arrays a perfect candidate to represent lists or sets. Typed Arrays are new to JavaScript with ECMAScript Edition 6 and present an array-like view of an underlying binary data buffer.

Tutorial Republic

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Understanding the JavaScript Data Types - Tutorial Republic

There are six basic data types in JavaScript which can be divided into three main categories: primitive (or primary), composite (or reference), and special data types. String, Number, and Boolean are primitive data types.

Mozilla

developer.mozilla.org › en-US › docs › Web › JavaScript › Guide › Grammar_and_types

Grammar and types - JavaScript | MDN

Literals represent values in JavaScript. These are fixed values—not variables—that you literally provide in your script. This section describes the following types of literals: ... An array literal is a list of zero or more expressions, each of which represents an array element, enclosed in square brackets ([]).

Metana

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JavaScript Data Types - Metana

March 24, 2025 - Infinity represents positive infinity, while -Infinity represents negative infinity, both of which occur when a number exceeds the upper or lower limit of JavaScript’s number range. Additionally, NaN (Not-a-Number) signifies an invalid numerical value, typically resulting from an undefined or erroneous mathematical operation, such as dividing zero by zero or attempting to parse a non-numeric string as a number. The String data type is used to represent sequences of characters.

Playcode

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JavaScript Data Types: Complete Guide with Examples | PlayCode

Learn all JavaScript data types: strings, numbers, booleans, null, undefined, objects, arrays, and symbols. Interactive examples and type checking included.

TutorialsTeacher

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Overview of Data Types in JavaScript

Here, 1 is the number type, 'one' is the string type, and true is the boolean type. JavaScript includes primitive and non-primitive data types as per the latest ECMAScript 5.1 specification.

Mimo

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JavaScript Data Types: Syntax, Usage, and Examples

JavaScript data types include primitives (string, number, boolean, null, undefined, symbol) and objects (arrays, functions). Use typeof to check types dynamically.

TutorialsPoint

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JavaScript - Data Types

In JavaScript, the array is a list of elements of the different data types.

JavaScript Tutorial

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JavaScript Data Types

November 15, 2024 - JavaScript data types include primitive types: undefined, null, string, boolean, number, BigInt, and symbol, and the complex type object.

Codecademy

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JavaScript | Data Types | Codecademy

May 15, 2024 - JavaScript uses seven primitive data types that are listed in the table below:

Stack Overflow

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How many data types are there in JavaScript, what are they, and what is considered a type? - Stack Overflow

Type of val	Result
Undefined	`undefined`
Null	`object` !!!
Boolean	`boolean`
Number	`number`
String	`string`
Symbol	`symbol`
BigInt	`bigint`
Object (does not implement [[Call]])	`object`
Object (implements [[Call]])	`function` !!!