Guide to Understanding Classes in JavaScript

Guide to Understanding Classes in JavaScript

Guide to Understanding Classes in JavaScript. When you think about classes and Object Oriented Programming as a paradigm, JavaScript is probably not the first language that comes to mind. In this guide, we are going to try and push JavaScript further up the list of associations, discussing how to apply Object Oriented Principles while writing JavaScript code.

Introduction

When you think about classes and Object Oriented Programming as a paradigm, JavaScript is probably not the first language that comes to mind.

In this guide, we are going to try and push JavaScript further up the list of associations, discussing how to apply Object Oriented Principles while writing JavaScript code. It's worth noting that some of the features we'll be covering are still in development, but most are in production and fully functioning. We'll be updating the guide appropriately as they're being released.

Since JavaScript is mostly used on the web, applying OOP to it can be really useful when, say, getting data from a server (for example, a collection from a MongoDB database) which you can shape up in a class with attributes, as it makes operating with data more intuitive and easier.

What is Object Oriented Programming (OOP)?

Before we get started, let's cover the definition of OOP and some basic principles. If you are already familiar with these concepts, you can go ahead and skip to  making a class in JavaScript.

Object Oriented Programing (OOP) is the most popular programming paradigm in Computer Science. It's main building blocks are objects and classes. A class is a blueprint from which objects are created - objects are instances of classes.

You can think of a class as a category, as well. Each class can have attributes/properties which contain different values and describe the states of a class' instance (object). It also contains functions (called methods), which typically change these properties and thus, the state of either the invoking instance or other instances, or return information about it/its neighbors.

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