JSFiddle - React, Tailwind, and code Playground
by dunerunner
JavaScript 1.7
let arr = [1,2,3,4];
// Question 1
arr.forEach(el => console.log(el));
// Question 2
const newArr = arr.map(el => el * 2);
console.log(newArr);
// Question 3
const newArr2 = arr.filter(el => el % 2 == 0);
console.log(newArr2);