1let array = ['Item 1', 'Item 2', 'Item 3'];
2
3// Here's 4 different ways
4for (let index = 0; index < array.length; index++) {
5  console.log(array[index]);
6}
7
8for (let index in array) {
9  console.log(array[index]);
10}
11
12for (let value of array) {
13  console.log(value); // Will log value in array
14}
15
16array.forEach((value, index) => {
17  console.log(index); // Will log each index
18  console.log(value); // Will log each value
19});

1let array = ["loop", "this", "array"]; // input array variable
2for (let i = 0; i < array.length; i++) { // iteration over input
3	console.log(array[i]); // logs the elements from the current input
4}

1function test() {
2    var sub_array = [];
3    var super_array = [];
4    for (var i = 1; i <= 3; i++) {
5        sub_array.push(i);
6        super_array.push(sub_array.slice(0));
7    }
8    alert(super_array);
9}