Object.getPrototypeOf() and Object.setPrototypeOf()

• Object.getPrototypeOf(obj) : Returns the prototype (i.e., the value of the internal [[Prototype]] property) of the specified object.
• Object.setPrototypeOf(obj, prototype) : Sets the prototype of a specified object. Use with caution because it can negatively impact performance.

These methods are the modern, standard way to read and modify prototypes, preferred over __proto__.

Code Example

const parent = { name: "parent" };
const child = {};

Object.setPrototypeOf(child, parent);
console.log(Object.getPrototypeOf(child) === parent); // true
console.log(child.name); // "parent"