const array1 = [1, 4, 9, 16]; // pass a function to map const map1 = array1.map(x => x * 2); console.log(map1); // expected output: Array [2, 8, 18, 32]
var numbers = [4, 9, 16, 25]; var x = numbers.map(Math.sqrt) document.getElementById("demo").innerHTML = x;