What Is Meant by Iterator

In computer programming, an iterator is an object that enables a programmer to traverse a container, particularly lists. Various types of iterators are often provided via a container’s interface.

How do I write an iterator in JavaScript?

1. Program: <script> const array = [ ‘a’ , ‘b’ , ‘c’ ]; const it = array[Symbol.iterator](); // and on this iterator method we have ‘next’ method. document.write(JSON.stringify(it.next())); …
2. Output: {“value”:”a”,”done”:false}{“value”:”b”,”done”:false} {“value”:”c”,”done”:false}{“done”:true}

What is an iterator method?

An iterator is an object that has methods that allow you to proccess a collection of items one at a time. … Iterator interface provides the following methods: boolean hasNext() – Returns true if the iteration has more elements. E next() – Returns the next element in the iteration.