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
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 # sec-reflect.getprototypeof |
Browser compatibility
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