foreach using index in js code example

Example 1: javascript foreach

const colors = ['blue', 'green', 'white'];

function iterate(item) {
  console.log(item);
}

colors.forEach(iterate);
// logs "blue"
// logs "green"
// logs "white"

Example 2: mdn foreach

arr.forEach(callback(currentValue [, index [, array]])[, thisArg])