What are some examples of map, filter, and reduce in JavaScript?

Can you explain how map, filter, and reduce work in JavaScript?

Sure! In JavaScript, map, filter, and reduce are array methods that allow you to manipulate and transform data.

Can you give me an example of using map?

Absolutely! If you have an array of numbers, you can use map to double each number: const doubled = numbers.map(num => num * 2);.

What about filter? How does that work?

Filter creates a new array with elements that pass a test. For example, const evens = numbers.filter(num => num % 2 === 0); gives you all even numbers.

And reduce? What does that do?

Reduce executes a reducer function on each element of the array, resulting in a single output value. For instance, const sum = numbers.reduce((acc, num) => acc + num, 0); sums all the numbers.