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JavaScript

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HTML

              
                <div id="container">
</div>
              
            
!

CSS

              
                .card {
   border: 1px solid black;
   padding: 10px;
}
              
            
!

JS

              
                function FragmentExample (props) {  
  const {isAdmin} = props

  return (
    <div
      className="card"
    >
      {
        isAdmin ? 
          <>
            <h3>Secret message</h3>
            <p>React Fragments are awesome!</p>
          </>
          : 
          <>
            <h3>
              You are not allowed to see this!
            </h3>
            <p>
              Only admins are allowed to see the secret message!
            </p>
         </>        
      }
    </div>
  );  
}

ReactDOM.render(
  <FragmentExample
    // set isAdmin to false to see the other message
    isAdmin={true}
  />,
  document.getElementById('container')
);
              
            
!
999px

Console