JSFiddle - React, Tailwind, and code Playground

by Jessie Lau

JavaScript

function each(arr, action) {
    var res = [];
    for (var i = 0; i < arr.length; i++) {
        res.push(action(arr[i]));
    }
    return res;
}

function filter(num) {
   return num > 2;
}

var arra = [1, 2, 3, 4, 5];
var arrReturn = each(arra, filter);
console.log(arrReturn);