How to implement Array.prototype.pop? JavaScript Interview Question | Problem Solving | JavaScript Polyfills

In this question, the candidate needs to implement a function customPop that mimics the behaviour of Array.prototype.pop method.

More about Array.prototype.pop

The pop() method removes the last element from an array and returns that element. This method changes the length of the array.

Examples

const array = [1, 2, 3];
const popped = array.pop();

// prints 3
console.print(popped);

// prints [1,2]
console.print(array);

Syntax

pop()

Return value

The pop() method removes the last element from an array and returns that value to the caller. If you call pop() on an empty array, it returns undefined.

Submission

Start the timer, complete your solution, and test it against the test cases provided by the platform. Ideally, you should finish this question within 30 mins. Share your solution with us -- https://twitter.com/devtoolstech