array push javascript with real data code example

Example 1: js array push

const arr = ["foo", "bar"];
arr.push('baz'); // 3
arr; // ["foo", "bar", "baz"]

Example 2: js push

let arr = [9, 4, 3, 18]
arr.push(30)
console.log(arr) // [9, 4, 3, 18, 30]