title: Node.js - submit form
body: <p>I use node.js and express. When I press the button (btnSend), I want to send data to node.js by express (without refresh the page). How do I send data using jQuery?</p>
  
  <pre><code>&lt;form action="/Send" method="post"&gt;
  Username: 
  &lt;input type="text" name="user" id="txtUser" /&gt;
  &lt;input type="submit" value="Submit" id="btnSend" /&gt;
  &lt;/form&gt;
  </code></pre>