What are iterators in JavaScript and how do they work?

What are iterators in JavaScript and how do they work?

Iterators are objects that allow you to traverse through a collection, like arrays or strings, one element at a time.

Can you give me an example of how to create an iterator?

Sure! You can create an iterator by defining a function that returns an object with a next method. This method should return the next value in the sequence.

What is the difference between an iterator and an iterable?

An iterable is an object that can be iterated over, like an array, while an iterator is the object that actually performs the iteration.

How do I use the for...of loop with iterators?

You can use the for...of loop to iterate over any iterable, which internally uses the iterator to access each element.