Reflect.getPrototypeOf()

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.

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 Language Specification (ECMAScript) # sec-reflect.getprototypeof

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`getPrototypeOf`	49	12	42	No	36	10	49	49	42	36	10	5.0