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Title: Object - JavaScript | MDN

Open Graph Title: Object - JavaScript | MDN

Description: The Object type represents one of JavaScript's data types. It is used to store various keyed collections and more complex entities. Objects can be created using the Object() constructor or the object initializer / literal syntax.

Open Graph Description: The Object type represents one of JavaScript's data types. It is used to store various keyed collections and more complex entities. Objects can be created using the Object() constructor or the object initializer / literal syntax.

Opengraph URL: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object

direct link

Domain: developer.mozilla.org

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Links:

Skip to main contenthttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#content
Skip to searchhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#search
MDN https://developer.mozilla.org/en-US/
HTML: Markup languagehttps://developer.mozilla.org/en-US/docs/Web/HTML
Elementshttps://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements
Global attributeshttps://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes
Attributeshttps://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes
See all…https://developer.mozilla.org/en-US/docs/Web/HTML/Reference
Responsive imageshttps://developer.mozilla.org/en-US/docs/Web/HTML/Guides/Responsive_images
HTML cheatsheethttps://developer.mozilla.org/en-US/docs/Web/HTML/Guides/Cheatsheet
Date & time formatshttps://developer.mozilla.org/en-US/docs/Web/HTML/Guides/Date_and_time_formats
See all…https://developer.mozilla.org/en-US/docs/Web/HTML/Guides
SVGhttps://developer.mozilla.org/en-US/docs/Web/SVG
MathMLhttps://developer.mozilla.org/en-US/docs/Web/MathML
XMLhttps://developer.mozilla.org/en-US/docs/Web/XML
CSS: Styling languagehttps://developer.mozilla.org/en-US/docs/Web/CSS
Propertieshttps://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Properties
Selectorshttps://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Selectors
At-ruleshttps://developer.mozilla.org/en-US/docs/Web/CSS/Reference/At-rules
Valueshttps://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Values
See all…https://developer.mozilla.org/en-US/docs/Web/CSS/Reference
Box modelhttps://developer.mozilla.org/en-US/docs/Web/CSS/Guides/Box_model/Introduction
Animationshttps://developer.mozilla.org/en-US/docs/Web/CSS/Guides/Animations/Using
Flexboxhttps://developer.mozilla.org/en-US/docs/Web/CSS/Guides/Flexible_box_layout/Basic_concepts
Colorshttps://developer.mozilla.org/en-US/docs/Web/CSS/Guides/Colors/Applying_color
See all…https://developer.mozilla.org/en-US/docs/Web/CSS/Guides
Column layoutshttps://developer.mozilla.org/en-US/docs/Web/CSS/How_to/Layout_cookbook/Column_layouts
Centering an elementhttps://developer.mozilla.org/en-US/docs/Web/CSS/How_to/Layout_cookbook/Center_an_element
Card componenthttps://developer.mozilla.org/en-US/docs/Web/CSS/How_to/Layout_cookbook/Card
See all…https://developer.mozilla.org/en-US/docs/Web/CSS/How_to/Layout_cookbook
JavaScript: Scripting languagehttps://developer.mozilla.org/en-US/docs/Web/JavaScript
Standard built-in objectshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects
Expressions & operatorshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators
Statements & declarationshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements
Functionshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions
See all…https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference
Control flow & error handinghttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Control_flow_and_error_handling
Loops and iterationhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration
Working with objectshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_objects
Using classeshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_classes
See all…https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide
Web APIs: Programming interfaceshttps://developer.mozilla.org/en-US/docs/Web/API
File system APIhttps://developer.mozilla.org/en-US/docs/Web/API/File_System_API
Fetch APIhttps://developer.mozilla.org/en-US/docs/Web/API/Fetch_API
Geolocation APIhttps://developer.mozilla.org/en-US/docs/Web/API/Geolocation_API
HTML DOM APIhttps://developer.mozilla.org/en-US/docs/Web/API/HTML_DOM_API
Push APIhttps://developer.mozilla.org/en-US/docs/Web/API/Push_API
Service worker APIhttps://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API
See all…https://developer.mozilla.org/en-US/docs/Web/API
Using the Web animation APIhttps://developer.mozilla.org/en-US/docs/Web/API/Web_Animations_API/Using_the_Web_Animations_API
Using the Fetch APIhttps://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch
Working with the History APIhttps://developer.mozilla.org/en-US/docs/Web/API/History_API/Working_with_the_History_API
Using the Web speech APIhttps://developer.mozilla.org/en-US/docs/Web/API/Web_Speech_API/Using_the_Web_Speech_API
Using web workershttps://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers
All web technologyhttps://developer.mozilla.org/en-US/docs/Web
Accessibilityhttps://developer.mozilla.org/en-US/docs/Web/Accessibility
HTTPhttps://developer.mozilla.org/en-US/docs/Web/HTTP
URIhttps://developer.mozilla.org/en-US/docs/Web/URI
Web extensionshttps://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions
WebAssemblyhttps://developer.mozilla.org/en-US/docs/WebAssembly
WebDriverhttps://developer.mozilla.org/en-US/docs/Web/WebDriver
See all…https://developer.mozilla.org/en-US/docs/Web
Mediahttps://developer.mozilla.org/en-US/docs/Web/Media
Performancehttps://developer.mozilla.org/en-US/docs/Web/Performance
Privacyhttps://developer.mozilla.org/en-US/docs/Web/Privacy
Securityhttps://developer.mozilla.org/en-US/docs/Web/Security
Progressive web appshttps://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps
Learn web developmenthttps://developer.mozilla.org/en-US/docs/Learn_web_development
Getting started moduleshttps://developer.mozilla.org/en-US/docs/Learn_web_development/Getting_started
Core moduleshttps://developer.mozilla.org/en-US/docs/Learn_web_development/Core
MDN Curriculumhttps://developer.mozilla.org/en-US/curriculum/
Structuring content with HTML modulehttps://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Structuring_content
CSS styling basics modulehttps://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Styling_basics
CSS layout modulehttps://developer.mozilla.org/en-US/docs/Learn_web_development/Core/CSS_layout
Dynamic scripting with JavaScript modulehttps://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Scripting
Playgroundhttps://developer.mozilla.org/en-US/play
HTTP Observatoryhttps://developer.mozilla.org/en-US/observatory
Border-image generatorhttps://developer.mozilla.org/en-US/docs/Web/CSS/CSS_backgrounds_and_borders/Border-image_generator
Border-radius generatorhttps://developer.mozilla.org/en-US/docs/Web/CSS/CSS_backgrounds_and_borders/Border-radius_generator
Box-shadow generatorhttps://developer.mozilla.org/en-US/docs/Web/CSS/CSS_backgrounds_and_borders/Box-shadow_generator
Color format converterhttps://developer.mozilla.org/en-US/docs/Web/CSS/CSS_colors/Color_format_converter
Color mixerhttps://developer.mozilla.org/en-US/docs/Web/CSS/CSS_colors/Color_mixer
Shape generatorhttps://developer.mozilla.org/en-US/docs/Web/CSS/CSS_shapes/Shape_generator
About MDNhttps://developer.mozilla.org/en-US/about
Advertise with ushttps://developer.mozilla.org/en-US/advertising
Communityhttps://developer.mozilla.org/en-US/community
MDN on GitHubhttps://github.com/mdn
Bloghttps://developer.mozilla.org/en-US/blog/
Webhttps://developer.mozilla.org/en-US/docs/Web
JavaScripthttps://developer.mozilla.org/en-US/docs/Web/JavaScript
Referencehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference
Standard built-in objectshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects
Objecthttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object
https://github.com/orgs/mdn/discussions/739
https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Object
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object
https://developer.mozilla.org/es/docs/Web/JavaScript/Reference/Global_Objects/Object
https://developer.mozilla.org/fr/docs/Web/JavaScript/Reference/Global_Objects/Object
https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Object
https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Global_Objects/Object
https://developer.mozilla.org/pt-BR/docs/Web/JavaScript/Reference/Global_Objects/Object
https://developer.mozilla.org/ru/docs/Web/JavaScript/Reference/Global_Objects/Object
https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Object
Learn more https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility
See full compatibility https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#browser_compatibility
Report feedback https://survey.alchemer.com/s3/7634825/MDN-baseline-feedback?page=%2Fen-US%2Fdocs%2FWeb%2FJavaScript%2FReference%2FGlobal_Objects%2FObject&level=high
JavaScript's data typeshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Data_structures
Object()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/Object
object initializer / literal syntaxhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Object_initializer
Descriptionhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#description
Constructorhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#constructor
Static methodshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#static_methods
Instance propertieshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#instance_properties
Instance methodshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#instance_methods
Exampleshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#examples
Specificationshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#specifications
Browser compatibilityhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#browser_compatibility
See alsohttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#see_also
Descriptionhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#description
objectshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Data_structures#objects
null prototypehttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#null-prototype_objects
potentially dangerous mechanismhttps://developer.mozilla.org/en-US/docs/Web/Security/Attacks/Prototype_pollution
immutable prototypehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/setPrototypeOf#description
Object prototype propertieshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#object_prototype_properties
null-prototype objectshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#null-prototype_objects
statichttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#static_methods
valueOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString
type conversionhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Data_structures#type_coercion
__defineGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__
__defineSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__
__lookupGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__
__lookupSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__
Object.defineProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty
Object.getOwnPropertyDescriptor()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptor
__proto__https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/proto
Object.getPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getPrototypeOf
Object.setPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/setPrototypeOf
propertyIsEnumerable()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
hasOwnProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
Object.getOwnPropertyDescriptor()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptor
Object.hasOwn()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwn
isPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf
instanceofhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof
call()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call
Deleting a property from an objecthttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#deleting_a_property_from_an_object
Map.prototype.delete()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/delete
deletehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete
null-prototype objectshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#null-prototype_objects
inheritance and the prototype chainhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Inheritance_and_the_prototype_chain
Object.create(null)https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/create
object initializer syntaxhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Object_initializer
Object.prototype.__proto__https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/proto
Object.setPrototypeOf(obj, null)https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/setPrototypeOf
Object.prototype.toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
Object.setPrototypeOf(nullProtoObj, Object.prototype)https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/setPrototypeOf
mapshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map
prototype pollution attackshttps://developer.mozilla.org/en-US/docs/Web/Security/Attacks/Prototype_pollution
Object.groupBy()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/groupBy
RegExp.prototype.exec()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/exec
Array.prototype[Symbol.unscopables]https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.unscopables
import.metahttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/import.meta
import * as ns from "module";https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import#namespace_import
import()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/import
extends nullhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/extends#extending_null
Object coercionhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#object_coercion
The operationhttps://tc39.es/ecma262/multipage/abstract-operations.html#sec-toobject
undefinedhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/undefined
nullhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/null
TypeErrorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError
Numberhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number
Stringhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
Booleanhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean
Symbolhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol
BigInthttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt
Object.prototype.valueOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
Object()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/Object
TypeErrorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError
for...inhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...in
Arrayhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
Object.keys()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
thishttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this
global objecthttps://developer.mozilla.org/en-US/docs/Glossary/Global_object
conversion to primitiveshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Data_structures#primitive_coercion
Constructorhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#constructor
Object()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/Object
Static methodshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#static_methods
Object.assign()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
Object.create()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/create
Object.defineProperties()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperties
Object.defineProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty
Object.entries()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries
Object.freeze()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
Object.fromEntries()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/fromEntries
Object.entrieshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries
Object.getOwnPropertyDescriptor()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptor
Object.getOwnPropertyDescriptors()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptors
Object.getOwnPropertyNames()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyNames
Object.getOwnPropertySymbols()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertySymbols
Object.getPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getPrototypeOf
Object.groupBy()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/groupBy
Object.hasOwn()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwn
Object.is()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
==https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Equality
===https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Strict_equality
Object.isExtensible()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isExtensible
Object.isFrozen()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isFrozen
Object.isSealed()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isSealed
Object.keys()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
Object.preventExtensions()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/preventExtensions
Object.seal()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/seal
Object.setPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/setPrototypeOf
Object.values()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/values
Instance propertieshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#instance_properties
Object.prototype.__proto__https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/proto
Object.prototype.constructorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor
Objecthttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/Object
Instance methodshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#instance_methods
Object.prototype.__defineGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__
Object.prototype.__defineSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__
Object.prototype.__lookupGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__
Object.prototype.__lookupSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__
Object.prototype.hasOwnProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
Object.prototype.isPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf
Object.prototype.propertyIsEnumerable()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
enumerable ownhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Enumerability_and_ownership_of_properties
Object.prototype.toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
Object.prototype.toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
Object.prototype.valueOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
Exampleshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#examples
Constructing empty objectshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#constructing_empty_objects
Using Object() constructor to turn primitives into an Object of their respective typehttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#using_object_constructor_to_turn_primitives_into_an_object_of_their_respective_type
Object()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/Object
Booleanhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean
BigInthttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt
Object prototypeshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#object_prototypes
Inheritance and the prototype chainhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Inheritance_and_the_prototype_chain
Specificationshttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#specifications
ECMAScript® 2026 Language Specification# sec-object-objectshttps://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object-objects
Browser compatibilityhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#browser_compatibility
See alsohttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object#see_also
Object initializerhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Object_initializer
Prototype pollution attackhttps://developer.mozilla.org/en-US/docs/Web/Security/Attacks/Prototype_pollution
Learn how to contributehttps://developer.mozilla.org/en-US/docs/MDN/Community/Getting_started
MDN contributorshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/contributors.txt
View this page on GitHubhttps://github.com/mdn/content/blob/main/files/en-us/web/javascript/reference/global_objects/object/index.md?plain=1
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Standard built-in objectshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects
Objecthttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object
Object()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/Object
assign()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
create()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/create
defineProperties()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperties
defineProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty
entries()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries
freeze()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
fromEntries()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/fromEntries
getOwnPropertyDescriptor()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptor
getOwnPropertyDescriptors()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptors
getOwnPropertyNames()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyNames
getOwnPropertySymbols()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertySymbols
getPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getPrototypeOf
groupBy()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/groupBy
hasOwn()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwn
is()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
isExtensible()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isExtensible
isFrozen()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isFrozen
isSealed()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isSealed
keys()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
preventExtensions()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/preventExtensions
seal()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/seal
setPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/setPrototypeOf
values()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/values
__defineGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__
__defineSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__
__lookupGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__
__lookupSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__
hasOwnProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
isPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf
propertyIsEnumerable()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
valueOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
__proto__https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/proto
constructorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor
Object/Functionhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object
apply()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/apply
bind()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind
call()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString
[Symbol.hasInstance]()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/Symbol.hasInstance
displayNamehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/displayName
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length
namehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name
prototypehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/prototype
argumentshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/arguments
callerhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/caller
__defineGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__
__defineSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__
__lookupGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__
__lookupSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__
hasOwnProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
isPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf
propertyIsEnumerable()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
valueOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
__proto__https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/proto
constructorhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor
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