javascript foreach index

1const avengers = ['thor', 'captain america', 'hulk'];
2avengers.forEach((item, index)=>{
3	console.log(index, item)
4})

1users.forEach((user, index)=>{
2	console.log(index); // Prints the index at which the loop is currently at
3});

1const iterable = [...];
2for (const [index, elem] in iterable.entries()) {
3  f(index, elem);
4}
5
6// or
7iterable.forEach((elem, index) => {
8  f(index, elem);
9});

1const array1 = ['a', 'b', 'c'];
2
3array1.forEach(element => console.log(element));

1var colors = ["red", "blue", "green"];
2colors.forEach(function(color) {
3    console.log(color);
4});

1let numbers = ['one', 'two', 'three', 'four'];
2
3numbers.forEach((num) => {
4  console.log(num);
5});  // one   //two //three // four