If developers directly go to React they will face a lot of problems while learning this library. So, in this article, we will see what are skills you must know before learning ReactJS.
What are skills you must know before learning ReactJS?
There is no doubt that ReactJS is the most popular library among frontend developers. Its popularity is continuously increasing day by day. The website running on ReactJS looks beautiful. Also, most of the beginners in development get attracted to ReactJs as well. But a common mistake that a lot of developers and experienced people make is jumping directly into ReactJS without knowing the prerequisites.
You will get stuck during your interview if you will be asked some questions related to ES6, JSX, Babel, Package manager, basic javascript, or some other fundamental concepts. We are going to discuss some prerequisites and some basic concepts that you should know before you jump to React. These basic concepts will also help you to pick up some other frameworks and libraries of javascript in the future.
HTML and CSS
Every front-end developer starts their journey with HTML and CSS. So before you start learning to react you should have a good command of writing HTML and CSS. You should know how to write semantic HTML tags, how to write CSS selectors, how to use classes, how to implement a CSS reset, box model, how to reset to border-box, flexbox, how to write responsive web applications including media queries, and how to build a frontend application using HTML and CSS.
JSX (Javascript XML) & Babel
In React you will work with JSX that looks like HTML and you can consider it like HTML-flavored JavaScript. It is the easiest way to add HTML code inside javascript or you can say it is the extension of the Javascript language syntax. You should have a complete understanding of what is JSX before you start learning React. Just take a look at the code below.
Start with variables, numbers, boolean, string,s and make your concepts clear about other very basic fundamentals. Make some small app on that like a calculator to see how things work together.
- Learn about operators, conditionals, functions, loops, javascript keywords, array, objects, and other fundamentals.
- Event handling, DOM manipulation, and how ‘this’ keyword works totally different in javascript (which is confusing for most of the developers).
- Higher-order function, callback function, arrow function, state (how state and setState() function works) scope, class & constructors, extends and inheritance, map, reduce, filter, promises, modules, closures, const, let (difference between var, let and const) and other features of ES5 and ES6.
Package Manager (Node + Npm)
Package Manager
When you will be working with ReactJS you’ll have to install many, smaller software packages. Package in javascript contains all the files needed for a module and modules are the javascript libraries that can be included in the Node project. Packages contain two things…package.json files + js file. To install these packages you need a good installer that can help you to download and install software packages easily without worrying about the dependencies.
(i) Node + NPM : Here NPM (Node package manager) plays a role and helps you to install and keep track of javascript software. You can use NodeJs or Yarn to manage these software packages. You can install NPM by installing Node.js. When you install Node.js, NPM will install automatically.
So before moving to React, you should have a solid understanding NPM (Node package manager) registry and how to install packages using NPM. NPM registry keeps track of the file that has been submitted. Anybody can submit these files (packages or modules). In short NPM registry is the place where developers can go and get the software to build software.
Let’s suppose a person has written some javascript file that is really useful. He/she thinks that the other people might use it so he/she pushes it to the NPM registry. Somebody else can get it from the NPM web registry and download it for their own purpose. Learn about the NPM more from GeeksforGeeks.
(ii) Node + Yarn : Here, Yarn (another package manager) plays a crucial role and helps you install and keep track of JavaScript software. Yarn is known for its speed and reliability, and you can use it alongside or instead of NPM.
To use Yarn, you first need to install Node.js, as Yarn relies on Node.js for its environment. Once Node.js is installed, you can easily install Yarn. Yarn offers features such as workspaces, which can be very beneficial for managing monorepos or multiple packages within a single repository.
Before moving to React, you should have a solid understanding of the Yarn registry and how to install packages using Yarn. The Yarn registry keeps track of submitted packages. Anyone can submit these packages or modules. In short, the Yarn registry is a place where developers can go to get the software needed to build other software.
For instance, if a developer has written a useful JavaScript file, they can publish it to the Yarn registry. Other developers can then download it for their own use. Learn more about Yarn and its features from Yarn’s official documentation and other resources like GeeksforGeeks.
Git and CLI (Command Line Interface)
Git (version control) is another must-have skill a developer should have to store their project on GitHub, Bitbucket, and GitLab (Code hosting platform). It helps developers to work and collaborate with each other and it allows them to track and host different versions of project files. You should have good knowledge that how Git and these code hosting platforms work. Developers use the command of Git to track the version of your files, so learn how to use all the commands such as push, pull, add, commit, etc. Also learn about merging, branching, handling merging conflicts, etc.
Conclusion:
So, in this article, we have been through what are skills you must know before learning ReactJS. Also, feel free to comment with your suggestions and feedback. Moreover, at BOSC Tech Labs, we have a team of highly experienced React JS developers. They can assist you in developing your customized web app. So contact us to hire experienced React JS developers.