how to append items to array in javascript code example

Example 1: javascript append to array

var colors=["red","white"];
colors.push("blue");//append 'blue' to colors

Example 2: js add item to array

const fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.push("Kiwi");

Example 3: javascript append array to end of array

const new_array = old_array.concat([value1[, value2[, ...[, valueN]]]])