JS Practice — Built-in Objects

unshift Returns the New Length

📖 Usage Example

const arr = ['b']
const len = arr.unshift('a')  // → 2 (new length)
arr  // → ['a', 'b']

unshift() returns the new length of the array after insertion.

Array.prototype.unshift — Return Value

The return value of unshift is the new length of the array after insertion — not the modified array itself.

Implement unshiftReturns which returns the value of arr.unshift(val) directly.

💡 Hints (2)