ReactJS: What is ReactJS?


ReactJS is a JavaScript library for building UI components for web applications. React was developed by Facebook and was released in 2013. Facebook extensively uses React in their products like Facebook, WhatsApp, Instagram etc. It is used by Facebook, Uber, Netflix, Twitter, Reddit, Paypal, Walmart, and many other popular websites.

ReactJS vs AngularJS vs VueJS
For a real engineer, there is no substantial difference in which framework to choose, because it just takes some time to get used to the new one. Every framework has its own pros and cons, meaning that there should be just the right choice for every single case during product development. More detail about for each JavaScript library can be read here.

The number of open positions worldwide that require a specific knowledge of a certain framework.


ReactJS Installation
ReactJS Installation is simple to do as below:
  1. Go to your Command Line Interface (CLI)
    • Eg. cmd in Windows or terminal in Mac OS / Linux
  2. Write npx create-react-app <folder-project-name> in your CLI
    • Eg. npx create-react-app learn-react
  3. After installation complete, enter to your folder where React have installed
    • Eg. cd learn-react
  4. Write npm start
After you run npm start, your browser will automatically open and redirect to https://localhost:3000 as below.

ReactJS Welcome Page (Already edited)

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