Looking to start coding with React js but don't know where to begin? Our comprehensive notes will help you learn React js quickly and easily. Get up to speed quickly on the basics of this popular library and dive deep into advanced concepts like components, hooks, state management and more. With Re...
React.js is a popular open-source JavaScript library used for building user
interfaces (UIs). It was created by Facebook and is now maintained by both
Facebook and a large community of developers. React allows developers to
create reusable UI components that can be used to build complex applications
with minimal code.
One of the main features of React is its ability to efficiently render changes to the
UI by using a virtual DOM (Document Object Model) which reduces the number
of direct updates to the actual DOM. React also supports server-side rendering,
allowing for faster load times and better search engine optimization.
React uses a declarative approach to programming, which means that
developers can describe what they want their UI to look like and React takes
care of updating the actual DOM to match that description. This makes it easier
to reason about the application and reduces the likelihood of bugs.
React can be used in combination with other libraries and frameworks to create
powerful web applications. It is commonly used alongside Redux for state
management and React Native for building mobile applications.
, Setting up
Create React App provides a pleasant learning environment for React and is
the easiest approach to begin constructing a new single-page application in
React.
It configures your development environment to leverage the most recent
JavaScript capabilities, provides a pleasant developer experience, and optimizes
your application for production. You must have Node >= 14.0.0 and npm >= 5.6
installed on your PC. To start a project, type:
, Simple React App
Here's a simple React demo that creates a basic counter application.
First, you'll need to set up a basic React environment with a package manager
like npm or yarn. Then, you can create a new React component called Counter
that will display a counter value and two buttons to increment and decrement that
value.
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