What are the performance differences between forEach and map in JavaScript?

What are the performance differences between forEach and map in JavaScript?

The main difference is that map creates a new array, while forEach does not return anything. This can affect performance.

So, if I just want to iterate over an array without creating a new one, I should use forEach?

Exactly! Use forEach when you want to perform an action on each element without needing a new array.

Are there any performance benchmarks comparing the two?

Yes, generally, forEach can be slightly faster for simple iterations, but the difference is often negligible for small arrays.

What about readability? Is one more readable than the other?

map can be more readable when you're transforming data, while forEach is straightforward for side effects. It depends on the context.