What are iterators in JavaScript?

What are iterators in JavaScript?

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 use an iterator?

Sure! You can use the for...of loop to iterate over an array. For example: for (let item of array) { console.log(item); }.

What is the difference between an iterator and an array?

An iterator is a protocol for accessing elements in a collection, while an array is a data structure that holds multiple values.

Are there built-in iterators in JavaScript?

Yes, JavaScript has built-in iterators for collections like arrays, strings, maps, and sets.