title: Checking authentication in React
body: <p>How do I check if user is authenticated in my React component?</p>
  
  <pre><code>class MyComponent extends Component {
  
     var isAuthenticated = false; // How do I check if the user is authenticated?
     var message = "Hello stranger!";
  
     if(isAuthenticated) {
        message = "Hello friend!";
     }
  
     render() {
        return(
           &lt;div&gt;
               {message}
           &lt;/div&gt;
        );
     }
  }
  </code></pre>