Callback functions

forEach.js

function forEach(arr, callback) {
    // for each element in the arr, run the callback, passing in the element
    for (let i = 0; i < arr.length; i++) {
        callback(arr[i], i)
    }
}

module.exports = forEach;

map.js

function map(arr, callback) {
    const newArr = []

    for(let i = 0; i < arr.length; i++) {
        newArr.push(callback(arr[i]))
    }

    return newArr
}

module.exports = map;