Package Manager (Node + Npm)
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 files. 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. 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 of the NPM (Node package manager) registry and how to install packages using NPM. The NPM registry keeps track of the files that have 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 really useful JavaScript files. He/she thinks that 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 w3wiki.
Top 5 Skills You Must Know Before You Learn ReactJS
Do you know enough javascript before jumping into React??
Do you know how to use the map() method to loop through an array in javascript or ReactJS??
If you are learning React and you get stuck on these kinds of above questions then definitely you are making mistakes in your learning process. There is no doubt that ReactJS is the most popular library among frontend developers and its popularity is continuously increasing day by day. The website running on ReactJS looks beautiful and most of the beginners in development get attracted to ReactJs (developed by Facebook) as well but a common mistake that a lot of developers and experienced people make is jumping directly into ReactJS (or some other library and framework) without knowing the prerequisites. If you will directly go to React you will face a lot of problems while learning this library and in interviews as well.
You will get stuck during your interview if you are 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.