When should I use map, filter, or reduce in JavaScript?

Can you explain when to use map, filter, or reduce in JavaScript?

Sure! Use map to transform each element, filter to select elements based on a condition, and reduce to accumulate values.

Can you give me an example of each?

Of course! For map, you might convert an array of numbers to their squares. For filter, you could select even numbers from an array. For reduce, you might sum all the numbers in an array.

What if I want to chain them together?

You can chain them! For example, you can first filter an array, then map the results, and finally reduce to get a single value.

That sounds useful! Can you show me a code snippet?

Absolutely! Here's a quick example: const result = array.filter(x => x > 0).map(x => x * 2).reduce((acc, x) => acc + x, 0); This filters positive numbers, doubles them, and sums them up.