title: Need to create xul based frame in firefox extension build using xul
body: <p>I want to create xul based frame in one of my firefox extension. The frame should look like <a href="https://developer.mozilla.org/en-US/Add-ons/SDK/Low-Level_APIs/ui_frame" rel="nofollow noreferrer">https://developer.mozilla.org/en-US/Add-ons/SDK/Low-Level_APIs/ui_frame</a></p>
  
  <p>or </p>
  
  <p>how to use below node js code in xul:</p>
  
  <pre><code>var { Frame } = require("sdk/ui/frame");
  var frame = new Frame({
    url: "./city-info.html"
  });
  </code></pre>
  
  <p>In node.js, its working fine, but I dont know how to create the same thing with xul. Anybody can help?</p>
  
  <p>thanks in advance.</p>