title: Run node.js from the browser on client side
body: <p>I need to run node.js from the browser (on client side).
  Certainly the Node.js is already installed on the client</p>
  
  <p>For a simple example. Html-page contains only one button. If you click on this button must run node.js on the client side and execute node.js code:</p>
  
  <pre><code>//it is an ordinary browser js code
  $("#btn").on("click", function () {
     //execute node.js code ON CLIENT SIDE
  });
  </code></pre>