The static Reflect
.setPrototypeOf()
method is the same method as Object.setPrototypeOf()
. It sets the prototype (i.e., the internal [[Prototype]]
property) of a specified object to another object or to null
.
Syntax
Reflect.setPrototypeOf(target, prototype)
Parameters
target
- The target object of which to set the prototype.
prototype
- The object's new prototype (an object or
null
).
Return value
A Boolean
indicating whether or not the prototype was successfully set.
Exceptions
A TypeError
, if target
is not an Object
or if prototype
is neither an object nor null
.
Description
The Reflect.setPrototypeOf
method changes the prototype (i.e. the value of the internal [[Prototype]]
property) of the specified object.
Examples
Using Reflect.setPrototypeOf()
Reflect.setPrototypeOf({}, Object.prototype); // true // It can change an object's [[Prototype]] to null. Reflect.setPrototypeOf({}, null); // true // Returns false if target is not extensible. Reflect.setPrototypeOf(Object.freeze({}), null); // false // Returns false if it cause a prototype chain cycle. var target = {}; var proto = Object.create(target); Reflect.setPrototypeOf(target, proto); // false
Specifications
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Reflect.setPrototypeOf' in that specification. |
Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) The definition of 'Reflect.setPrototypeOf' in that specification. |
Living Standard |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 49 | 12 | 42 | No | 36 | 10 |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 49 | 49 | Yes | 42 | No | 36 | 10 |
See also
Document Tags and Contributors
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Contributors to this page:
fscholz,
jameshkramer,
kdex,
bsara,
eduardoboucas,
gingerik,
YuichiNukiyama,
ziyunfei
Last updated by:
fscholz,