Skip to Content
Learning JavaScript Data Structures and Algorithms - Third Edition
book

Learning JavaScript Data Structures and Algorithms - Third Edition

by Loiane Avancini
April 2018
Beginner to intermediate content levelBeginner to intermediate
426 pages
10h 19m
English
Packt Publishing
Content preview from Learning JavaScript Data Structures and Algorithms - Third Edition

The add method

The next method we will implement is the add method, as follows:

add(element) {  if (!this.has(element)) {    this.items[element] = element; // {1}    return true;  }  return false;} 

Given an element, we can check whether the element already exists in the set. If not, we add the element to the set ({1}) and return true to indicate that the element was added. If the element already exists in the set, we simply return false to indicate that the element was not added.

We are adding the element as the key and value because it will help us search for the element if we store it as the key as well.
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Learning JavaScript Data Structures and Algorithms

Learning JavaScript Data Structures and Algorithms

Loiane Avancini

Publisher Resources

ISBN: 9781788623872Supplemental Content