JS Built-ins
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ObjectObject.setPrototypeOfbeginner

Object.setPrototypeOf() — returns the object

📖 Usage Example
// Set the prototype of an object
const animal = { breathe() { return true } }
const dog = {}
Object.setPrototypeOf(dog, animal)
dog.breathe()   // → true

Use Object.setPrototypeOf() to dynamically change an object's prototype, though creating objects with the correct prototype upfront is preferred.

Object.setPrototypeOf() — return value

Object.setPrototypeOf(obj, proto) returns the modified object itself, enabling chaining.

Challenge: Verify that Object.setPrototypeOf() returns the same object reference.

💡 Hints (1)
  • • setPrototypeOf returns the object for convenient chaining