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Object() constructor - JavaScript | MDN
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  2. JavaScript
  3. JavaScript
  5. Object
  6. Object() constructor
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Object() constructor

Baseline Widely available

This feature is well established and works across many devices and browser versions. Its been available across browsers since 2015 7.

Object .

, Object new Object() .

In this article

js
new Object();
new Object(value);

value

js
let o = new Object();
o.foo = 42;

console.log(o);
// Object { foo: 42 }

undefined null types

o :

js
let o = new Object();
js
let o = new Object(undefined);
js
let o = new Object(null);

Specification
ECMAScript 2027 LanguageSpecification
# sec-object-constructor

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  2. Object
    1. Object() constructor
    1. Object.assign()
    2. Object.create()
    3. Object.defineProperties()
    4. Object.defineProperty()
    5. Object.entries()
    6. Object.freeze()
    7. Object.fromEntries()
    8. Object.getOwnPropertyDescriptor()
    9. Object.getOwnPropertyDescriptors()
    10. Object.getOwnPropertyNames()
    11. Object.getOwnPropertySymbols()
    12. Object.getPrototypeOf()
    13. Object.groupBy()
    14. Object.hasOwn()
    15. Object.is()
    16. Object.isExtensible()
    17. Object.isFrozen()
    18. Object.isSealed()
    19. Object.keys()
    20. Object.preventExtensions()
    21. Object.seal()
    22. setPrototypeOf()
    23. Object.values()
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__()
    3. Object.prototype.__lookupGetter__()
    4. Object.prototype.__lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toString()
    10. Object.prototype.valueOf()
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
  8. Object/Function
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.toSource()
    5. Function.prototype[@@hasInstance]()
    1. Function: displayName
    2. Function.prototype.length
    3. Function: name
    4. Function
    5. Function.arguments
    6. Function.prototype.caller
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__()
    3. Object.prototype.__lookupGetter__()
    4. Object.prototype.__lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toString()
    10. Object.prototype.valueOf()
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
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