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

var colors=["red","white"];

colors.push("blue");//append 'blue' to colors

var colors= ["red","blue"];

    colors.push("yellow"); 

var colors= ["red","blue"];

    colors.push("yellow"); //["red","blue","yellow"]

const array1 = ['a', 'b', 'c'];

const array2 = ['d', 'e', 'f'];

const array3 = array1.concat(array2);

// example:

let yourArray = [1, 2, 3];

yourArray.push(4); // yourArray = [1, 2, 3, 4]

​

// syntax:

// <array-name>.push(<value-to-add>);

var array = [0,1,3];

array.append(5);

console.log(array); // [0,1,3,5]

arr.push(item);

// initialize array

var arr = [

  "Hi",

  "Hello",

  "Bonjour"

];

​

// append new value to the array

arr.push("Hola");

​

console.log(arr);

 Run code snippetHide results

arr = [1, 2, 3, 4]

arr.push(5) // adds element to end

​

arr.unshift(0) // adds element to beginning