Run node.js from the browser on client side
<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>