JS: Reflect.setPrototypeOf

By Xah Lee. Date: . Last updated: .

New in ES2015.

Reflect.setPrototypeOf ( obj, proto )

Sets the parent object obj to proto.

If obj is not a object throw a TypeError exception.

If proto is not a object nor null throw a TypeError exception.

const a = {a1:1};
const b = {b1:1};
console.log ( Reflect.getPrototypeOf ( a ) ); // {}
console.log ( Reflect.setPrototypeOf ( a, b ) ); // true
console.log ( Reflect.getPrototypeOf ( a ) ); // { b1: 1 }

[see JS: Prototype and Inheritance]

[see JS: Get/Set Prototype]

Reference

ECMAScript® 2016 Language Specification#sec-reflect.setprototypeof

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