intermediate
Array Map Transformation
Transform array elements using the map method.
Learn functional programming with map().
📚 Concepts & Theory
Array Map
const doubled = arr.map(n => n * 2);🎯 Your Challenge
Write doubleValues that doubles each element.
📝 Starter Code
JavaScript
function doubleValues(arr) {
// Your code here
}
console.log(doubleValues([1, 2, 3]));Solution
JavaScript
function doubleValues(arr) {
return arr.map(num => num * 2);
}
console.log(doubleValues([1, 2, 3]));Explanation
Map transforms each element.
❓ Frequently Asked Questions
map returns new array