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React is a JavaScript library for building user interfaces. React is used to build single-page applications. React allows us to create reusable UI components. Start learning React now . Learning by Examples. Our "Show React" tool makes it easy to demonstrate React. It shows both the code and the result. Example: Get your own React.js Server.
React, sometimes referred to as a frontend JavaScript framework, is a JavaScript library created by Facebook. React is a tool for building UI components. How does React Work? React creates a VIRTUAL DOM in memory.
Components are independent and reusable bits of code. They serve the same purpose as JavaScript functions, but work in isolation and return HTML via a render () function. Components come in two types, Class components and Function components, in this chapter you will learn about Class components.
Facebook has created a Create React Application with everything you need to build a React app. It is a a development server that uses Webpack to compile React, JSX, and ES6, auto-prefix CSS files. The Create React App uses ESLint to test and warn about mistakes in the code.
React Forms. Previous Next . Just like in HTML, React uses forms to allow users to interact with the web page. Adding Forms in React. You add a form with React like any other element: Example: Get your own React.js Server. Add a form that allows users to enter their name: function MyForm() { return ( <form> <label>Enter your name:
React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations.
Welcome to the React documentation! This page will give you an introduction to the 80% of React concepts that you will use on a daily basis.
Start building dynamic user interfaces by learning React, the JavaScript library for developing single-page applications. React is important for developers that are focused on creating seamless web experiences.
React has been designed from the start for gradual adoption, and you can use as little or as much React as you need. Whether you want to get a taste of React, add some interactivity to a simple HTML page, or start a complex React-powered app, the links in this section will help you get started.
Markup like this, combined with CSS for style, and JavaScript for interactivity, lies behind every sidebar, avatar, modal, dropdown—every piece of UI you see on the Web. React lets you combine your markup, CSS, and JavaScript into custom “components”, reusable UI elements for your app.
