How to compare two arrays regardless of order in JavaScript

In this Article we will go through how to compare two arrays regardless of order only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const isEqual = (a, b) => JSON.stringify(a.sort()) === JSON.stringify(b.sort());

Parameters a and b are arrays.

isEqual([1, 2, 3], [1, 2, 3]);      // true
isEqual([1, 2, 3], [1, 3, 2]);      // true
isEqual([1, 2, 3], [1, '2', 3]);    // false