JS Practice — Built-in Objects

Object.getPrototypeOf() — function prototype

📖 Usage Example

// Get the prototype of an object
const arr = []
Object.getPrototypeOf(arr) === Array.prototype   // → true
Object.getPrototypeOf({}) === Object.prototype   // → true

Use Object.getPrototypeOf() to retrieve the prototype of an object, allowing you to inspect its inheritance chain.

Object.getPrototypeOf() — functions

Functions are objects too. The prototype of a function is Function.prototype.

Challenge: Implement fnProtoIsFunctionProto() that returns whether the prototype of a function is Function.prototype.

fnProtoIsFunctionProto() // → true

💡 Hints (1)

• Functions are objects whose `[[Prototype]]` is `Function.prototype`.