How to empty an array in Javascript

How do you empty an array? let's see how to clear it and empty all its elements

How do you empty an array?

There are a couple of ways to clean or empty an array in Javascript

The first one and easiest is to set its length to 0

const arr = [1, 2, 3, 4, 5];
arr.length = 0;

console.log(arr);
// expected output: []

The other way to empty an array is to mutate the original array reference, assigning an empty array to the original variable, for this reason it’s required to use let instead of const

let arr = [1, 2, 3, 4, 5];
arr = [];

console.log(arr);
// expected output: []