" Hello World ! " using React JS

• Create a document with .html extension, let it be index.html.
  

• Now add title to the web page. In the body section create a div tag with id='app'. We will then write react code which replaces the content here under div tag.
  
  
  
• Add the react-dom and react js script files to the index.html
  
• Add the react js script to be rendered in index.html 
  
• Open the index.html in your browser. You should see Hello World! as below.
  

You have done your first react application