What are the differences between iterables and iterators in JavaScript?

What are the differences between iterables and iterators in JavaScript?

In JavaScript, an iterable is an object that can be iterated over, like arrays or strings, while an iterator is an object that provides a way to access elements of an iterable one at a time.

Can you give me an example of an iterable and an iterator?

Sure! An array is an iterable. You can create an iterator from it using the Array.prototype.values() method, which allows you to access each element sequentially.

How do I create a custom iterable in JavaScript?

You can create a custom iterable by implementing the Symbol.iterator method in your object. This method should return an iterator object.

What is the purpose of the next() method in an iterator?

The next() method returns the next value in the sequence and an indication of whether the iteration is complete.