Array.prototype [native code]

[].push() – add an item at a very end of the array : let add_at_the_end = [1, 2, 3, 4, 5]; add_at_the_end[add_at_the_end.length] = 6; console.log(add_at_the_end); // [1, 2, 3, 4, 5, 6] [].unshift() – add an item at the beginning of the array : let a...