title: Calling Javascript function from hidden field
body: <p>How can I call a Javascript function from a hidden field?</p>
  
  <pre><code> &lt;asp:HiddenField ID="hdnfield" onChange="callJsFunction()" runat="server" /&gt;
  </code></pre>
  
  <p>So what can replace onChange? because hiddenfield doesn't support onTextChanged...</p>