The static Reflect
.getPrototypeOf()
method is almost the same method as Object.getPrototypeOf()
. It returns the prototype (i.e. the value of the internal [[Prototype]]
property) of the specified object.
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
Syntax
Reflect.getPrototypeOf(target)
Parameters
target
- The target object of which to get the prototype.
Return value
The prototype of the given object. If there are no inherited properties, null
is returned.
Exceptions
A TypeError
, if target
is not an Object
.
Description
The Reflect.getPrototypeOf
method returns the prototype (i.e. the value of the internal [[Prototype]]
property) of the specified object.
Examples
Using Reflect.getPrototypeOf()
Reflect.getPrototypeOf({}) // Object.prototype Reflect.getPrototypeOf(Object.prototype) // null Reflect.getPrototypeOf(Object.create(null)) // null
Compared to Object.getPrototypeOf()
// Same result for Objects Object.getPrototypeOf({}) // Object.prototype Reflect.getPrototypeOf({}) // Object.prototype // Both throw in ES5 for non-Objects Object.getPrototypeOf('foo') // Throws TypeError Reflect.getPrototypeOf('foo') // Throws TypeError // In ES2015 only Reflect throws, Object coerces non-Objects Object.getPrototypeOf('foo') // String.prototype Reflect.getPrototypeOf('foo') // Throws TypeError // To mimic the Object ES2015 behavior you need to coerce Reflect.getPrototypeOf(Object('foo')) // String.prototype
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Reflect.getPrototypeOf' in that specification. |
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.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
getPrototypeOf | Chrome Full support 49 | Edge Full support 12 | Firefox Full support 42 | IE No support No | Opera Full support 36 | Safari Full support 10 | WebView Android Full support 49 | Chrome Android Full support 49 | Firefox Android Full support 42 | Opera Android Full support 36 | Safari iOS Full support 10 | Samsung Internet Android Full support 5.0 | nodejs Full support 6.0.0 |
Legend
- Full support
- Full support
- No support
- No support