What does `Array.prototype.splice(1, 1)` do on `[1, 2, 3, 4]`?

Question

JavaScript Professional — Easy

What does `Array.prototype.splice(1, 1)` do on `[1, 2, 3, 4]`?

Accepted Answer

`Array.prototype.splice(1, 1)` removes 1 element at index 1 from the array `[1, 2, 3, 4]`, mutating the original array to `[1, 3, 4]` and returning the removed element, which is `2`.