Introduction to Sets in JavaScript

Introduction to Sets in JavaScript

Introduction to Sets in JavaScript. Sets are still relatively new in JavaScript and I still don’t see people taking full advantage of them. In this article, we will explore the features of Sets and also look into a few examples where Sets can make our life easier.

Sets are still relatively new in JavaScript and I still don’t see people taking full advantage of them.

In this article, we will explore the features of Sets and also look into a few examples where Sets can make our life easier.

General Concepts

A Set is a collection of elements that maintain insertion order, and only allows unique elements. If you insert five1’s in a row, only one will be inserted. When inserting, it will compare elements using === to determine if they should be inserted.

We need to be conscious of this fact because objects which are the exact same but have different references will in fact be inserted since they are being compared by reference.

Adding Values To A Set

How can we create a set? The simplest way is by using the Set constructor.

const mySet  = new Set();

programming javascript-development javascript coding

What is Geek Coin

What is GeekCash, Geek Token

Best Visual Studio Code Themes of 2021

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Hire Dedicated JavaScript Developers -Hire JavaScript Developers

Hire dedicated JavaScript Developers who are proficient in AngularJS, ReactJS, NodeJS, & VueJS frameworks. Get flexible hiring models as per your business requirements.

6 Ways to Practice Your Coding Skills and Grow Your Career as a JavaScript Developer

6 min read ... Some of the highest-paid JavaScript developers make close to $500k/year ... actually need to learn many languages in the course of their career to ... Learn concepts professional developers need to advance their careers ...

Principles of Functional Programming in JavaScript That Will Make Your Coding Life Easier

Who else loves to write side-effects-free functions? I think we, as programmers, all do. Today, in this story, I will walk you through the basic principles of functional programming that will make your coding life easier.

13 Useful JavaScript Developer Tools for Writing High-Quality Code

Today I’m going to show you 13 well-know and popular tools to write better and cleaner JavaScript code. These are tools that I’m using right now on my JavaScript developer journey. So if you want to improve the quality of your projects, this list is for you.

4 Ways You Can Get Rid of Dirty Side Effects for Cleaner Code in JavaScript

4 Ways You Can Get Rid of Dirty Side Effects for Cleaner Code in JavaScript. Bugs are born in many ways. Creating side effects is one of them. Some people say side effects are evil, some say they’re not.