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The static Reflect.ownKeys() method returns an array of the target object's own property keys.

Syntax

Reflect.ownKeys(target)

Parameters

target
The target object from which to get the own keys.

Return value

An Array of the target object's own property keys.

Exceptions

A TypeError, if target is not an Object.

Description

The Reflect.ownKeys method returns an array of the target object's own property keys. Its return value is equivalent to Object.getOwnPropertyNames(target).concat(Object.getOwnPropertySymbols(target)).

Examples

Using Reflect.ownKeys()

Reflect.ownKeys({z: 3, y: 2, x: 1}); // [ "z", "y", "x" ]
Reflect.ownKeys([]); // ["length"]

var sym = Symbol.for('comet');
var sym2 = Symbol.for('meteor');
var obj = {[sym]: 0, 'str': 0, '773': 0, '0': 0,
           [sym2]: 0, '-1': 0, '8': 0, 'second str': 0};
Reflect.ownKeys(obj);
// [ "0", "8", "773", "str", "-1", "second str", Symbol(comet), Symbol(meteor) ]
// Indexes in numeric order, 
// strings in insertion order, 
// symbols in insertion order

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Reflect.ownKeys' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Reflect.ownKeys' in that specification.
Draft  

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung InternetNode.js
Basic supportChrome Full support 49Edge Full support 12Firefox Full support 42IE No support NoOpera Full support 36Safari Full support 10WebView Android Full support 49Chrome Android Full support 49Edge Mobile Full support YesFirefox Android Full support 42Opera Android Full support 36Safari iOS Full support 10Samsung Internet Android Full support 5.0nodejs Full support 6.0.0

Legend

Full support  
Full support
No support  
No support

See also

Etiquetas do documento e colaboradores

Última atualização por: wbamberg,