How to append something to a JavaScript array

You can append new values to a JS array using the function Array.push. It adds new values to the end of the JavaScript array.

Here’s how you can use push to append a new value to an array.

const arr = [1, 2, 3];

arr.push(4);

console.log(arr); // [ 1, 2, 3, 4 ]

You can add more than one value with a single call to push.

const arr = [1, 2, 3];

arr.push(4, 5, 6);

console.log(arr); // [ 1, 2, 3, 4, 5, 6]