title: Why can't I see script injected using GWT ScriptInjector?
body: <p>I'm trying out using GWT's ScriptInjector for the first time, and was wondering why I can't see the injected script as a  tag anywhere in the page when I view page source. I'd expect it to show up in the page head.</p>
  
  <p>I'm using a dead simple example, which works in that it displays the alert. I'm just wondering why I can't physically see it injected in the page. Also if I declare a JavaScript variable inside my script, it doesn't seem available on the global scope.</p>
  
  <pre><code>ScriptInjector.fromString("window.alert('testing');")
  .setWindow(ScriptInjector.TOP_WINDOW)
  .inject();
  </code></pre>