React Introduction

React is a JavaScript library used for building user interfaces maintainded by Facebook.

React also known as React.js or ReactJS created by Jordan Walke, Facebook Software Engineer.

React is used for development of single page application or mobile applications.

It is best for receive or get rapidly changing data.

React gives functionality to create reusable UI components.

<div id="myReactAppExample"></div>

<script type="text/babel">
  class Firstdemo extends React.Component { 
    render() { 
      return <h1>{this.props.welcomemessage}</h1>
    } 
  } 

  ReactDOM.render(<Firstdemo welcomemessage="Hello World!" />, document.getElementById('myReactAppExample'));
</script>