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How to implement Array.prototype.shift? JavaScript Interview Question | Problem Solving | JavaScript Polyfills
@Devtools Tech
In this question, the candidate needs to implement a function customShift
that mimics the behaviour of Array.prototype.shift
method.
More about Array.prototype.shift
The shift()
method removes the first element from an array and returns that removed element. This method changes the length of the array.
Examples
const array = [1, 2, 3];
const firstElement = array.shift();
// prints 1
console.print(firstElement);
// prints [2,3]
console.print(array);
Syntax
shift()
Return value
The removed element from the array; undefined if the array is empty.
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