title: how can I debug client side javascript (in html pages) in google appscripts
body: <p>I am starting to appreciate the debugging features in the google app script editing environment, however I notice that I don't seem to be able to select client side javascript functions to debug in html pages, as shown in this image<img src="https://i.stack.imgur.com/lG8lt.png" alt="unable to select javascript functions in html pages in google app script editing environment"> </p>
  
  <p>Is there any way round this?  At the moment I guess I'm just going to hack and watch error messages ...</p>