3). What is JSX ? Why We Use JSX ?

      

•    JSX stands for JavaScript XML.

•    JSX allows us to write HTML in React.

•    JSX makes it easier to write and add HTML in React.

•    JSX allows us to
  write HTML elements in JavaScript and place them in the       DOM without any createElement() and/or appendChild() methods.

•    JSX converts HTML tags into react elements.

          

   Example

                                 Step 1 ) create a file Header.js

    

Step 2) import and render Header.js

Step 3) 'NPM Start'  to View Result in Browser