title: How to add a script element in an iframe for jQuery
body: <p>I have a parent document and iframe with some JavaScript code to add a <code>script</code> element in an <code>iframe</code> bellow:</p>
  
  <pre><code>var script = window.document.createElement('script');
  script.src = '/jquery.myPlugin.js';
  window.frames['test'].document.head.appendChild(script);
  </code></pre>
  
  <p>How to rewrite this code for jQuery?</p>