join two arrays javs code example

Example 1: js join two arrays

[1,2,3].concat([4,5,6])
// [1,2,3,4,5,6]

Example 2: join two arrays javascript

// using push and apply to return the same array
const arr1 = ['a', 'b'];
const arr2 = ['c', 'd'];
arr1.push.apply(arr1, arr2);
console.log(arr1) // ['a', 'b', 'c', 'd']