JS Practice — Built-in Objects

Function.prototype.bind() — bound this.x

📖 Usage Example

const doubled = [1,2,3].map(n => n * 2)
// Arrow functions don't need bind() — they capture this lexically

Arrow functions lexically capture this and never need bind().

bind() — accessing this.x

When a function references this.x, binding it to an object with x: 42 ensures it always returns 42.

Challenge: Bind fn to {x: 42} and verify bound() returns 42.

💡 Hints (1)