What is React JS?
ReactJS is an open-source, component based front end library responsible only for the view layer of the application. It is maintained by Facebook. ReactJS uses virtual DOM based mechanism to fill in data (views) in HTML DOM. The virtual DOM works fast owning to the fact that it only changes individual DOM elements instead of reloading complete DOM every time.
A React application is made up of multiple components, each responsible for outputting a small, reusable piece of HTML. Components can be nested within other components to allow complex applications to be built out of simple building blocks. A component may also maintain internal state – for example, a TabList component may store a variable corresponding to the currently open tab.
React “reacts” to state changes in your components quickly and automatically to rerender the components in the HTML DOM by utilizing the virtual DOM. The virtual DOM is an in-memory representation of an actual DOM. By doing most of the processing inside the virtual DOM rather than directly in the browser’s DOM, React can act quickly and only add, update, and remove components which have changed since the last render cycle occurred.
Why Learn ReactJS?
ReactJS presents streamlined solutions to some of front-end programming’s most persistent issues. ReactJS is fast, scalable, flexible, powerful, and has a robust developer community that’s rapidly growing. There’s never been a better time to learn React.
React.js Course Curriculum
Using ReactJS with TypeScript
State in React
Props in React
React Component Lifecycle
Forms and User Input
React AJAX call
Communication Between Components
Stateless Functional Components
Introduction to Server-Side Rendering
Setting Up React Environment
Using React with Flow
Keys in react
Higher Order Components
React with Redux
React.js Interview Questions & Answers
What you will learn in ReactJS course?
You’ll develop a strong understanding of React’s most essential concepts: JSX, components, and storing information via props and state. You’ll be able to combine these ideas in React’s modular programming style.
By the end of the ReactJS course, you’ll be able to learn: