How to write an iterator with Javascript

This article mainly introduces "how to write an iterator with Javascript". In daily operation, I believe many people have doubts about how to write an iterator with Javascript. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts about "how to write an iterator with Javascript". Next, please follow the editor to study!

1, the traditional way of writing, this need to control their own internal state. In order to traverse the object, we need to implement the iterator mentioned above on the object.

2. The other is realized by using the iterator of the Generator returned by the generator function.

Example

Two methods of import java.util.ArrayList;import java.util.Iterator;import java.util.List;// iterator public class test {public static void main (String [] args) {List list = new ArrayList (); list.add ("Zhang San"); list.add ("Li Si"); list.add ("Wang Wu"); list.add ("Erya"); list.add ("Qian Liu"); list.add ("Sun Qi"); Iterator it = list.iterator () While (it.hasNext ()) {System.out.println (it.next ());} for (Iterator iterator = list.iterator (); iterator.hasNext (); System.out.println (iterator.next () {second way to write an iterator}} this ends the study of "how to write an iterator with Javascript", hoping to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!