What are some common iterators in JavaScript?

What are some common iterators in JavaScript?

Some common iterators in JavaScript include forEach, map, filter, reduce, and some. Each serves a unique purpose.

Can you explain how the map iterator works?

Sure! The map iterator creates a new array by applying a function to each element of the original array.

What about the reduce iterator?

The reduce iterator executes a reducer function on each element of the array, resulting in a single output value.

Are there any performance considerations when using these iterators?

Yes, performance can vary. For large datasets, using for loops may be more efficient than some of the higher-order functions.