JSFiddle - React, Tailwind, and code Playground

by Jessie Lau

JavaScript

function forEach(array, action) {
  for (var i = 0; i < array.length; i++)
    action(array[i]);
}

var numbers = [1, 2, 3, 4, 5], sum = 0;
forEach(numbers, function(number){sum += number;});

console.log(sum);