title: Can a hacker inject values in to my jQuery function?
body: <p>I've been receiving unexpected data from my web app. Can a hacker change values in a javascript function?</p>
  
  <p>If my code is:</p>
  
  <pre><code>my_function('new_item',10,20,30,40);
  </code></pre>
  
  <p>is it possible that the 'new_item' parameter has been tampered with? What can I do to prevent this?</p>