javascript push all elements from array to another code example

Example 1: javascript array push

var SomeRandomArray = [];
SomeRandomArray.push("Hello, world!");

Example 2: js array push

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

Example 3: javascript push all elements of array to another array

var arrayA = [1, 2];
var arrayB = [3, 4];
var newArray = arrayA.concat(arrayB);