how to add an array to another array in javascript code example

Example 1: assign array to another array javascript

var ar = ["apple","banana","canaple"];
var bar = Array.from(ar);
alert(bar[1]); // alerts 'banana'

// Notes: this is for in In ES6, works for an object of arrays too!

Example 2: javascript concat two arrays

//ES6
const array3 = [...array1, ...array2];