How can I use map and filter effectively in JavaScript?

How can I use map and filter effectively in JavaScript?

You can use map to transform arrays and filter to select elements based on conditions. Would you like examples?

Yes, please provide an example using both map and filter.

Sure! Here's an example:

const numbers = [1, 2, 3, 4, 5];
const doubledEvens = numbers.filter(num => num % 2 === 0).map(num => num * 2);
console.log(doubledEvens); // Output: [4]

What if I want to chain multiple filters and maps?

You can chain them like this:

const numbers = [1, 2, 3, 4, 5, 6];
const result = numbers.filter(num => num > 2).map(num => num * 2);
console.log(result); // Output: [6, 8, 10]