title: Defer loading of js how?
body: <p>I have the following js script referenced on the bottom of the page:</p>
  
  <pre><code>&lt;script src="http://example.com/test.js" type="text/javascript"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>Google PageSpeed suggestion is to defer the loading of this js. I don't quite understand how to do that or the repercussions. Can someone please explain?</p>