We are required to write a JavaScript function that takes in an array of literals as the first argument and a search string as the second argument.
The function should the array for the that search string. If that string exists in the array, we should return its next element from the array, otherwise we should return false.
Example
const arr = ["", "comp", "myval", "view", "1"] const getNext = (value, arr) => { const a = [undefined].concat(arr) const p = a.indexOf(value) + 1; return a[p] || false; } console.log(getNext('comp', arr)); console.log(getNext('foo', arr));
Output
And the output in the console will be −
myval false