const forEach = (array) => { let counter = 0; array.forEach((element) => { counter += element * 2; }); return counter; }; console.log(forEach([1, 2, 3])); code example

Example 1: forEach index

const array1 = ['a', 'b', 'c'];

array1.forEach((element, index) => console.log(element, index));

Example 2: foreach javascript

Used to execute the same code on every element in an array
Does not change the array
Returns undefined