Rails spinoffs - Jan 2007 - How to force a page that doesn't want prototype.js to use it?

Railsers:

Suppose I have a page inside an IFrame, and it knows nothing about
Prototype.js.

Now suppose I set the IFrames'' src to javascript:void(function(){ ...
}) and
put a big string of raw Javascript where that ... is.

Now suppose that string wants to ping a server with new Ajax.Request.

The JS source to foist prototype.js into an unwilling page reputedly looks
like this:

  var newScript = document.createElement(''script'');
  newScript.type = "text/javascript";
  newScript.src = "/javascripts/prototype.js";
 
document.getElementsByTagName(''head'')[0].appendChild(newScript);

      new Ajax.Request( ''/ctrl/action'', ...);

That looks beautiful (for various definitions of "beautiful"), however
it
doesn''t seem to affect the scope of the current JS.

My next experiment will foist first, with one src=javascript:void() line,
and will then evaluate the new Ajax.Request on a second
src=javascript:void() line.

I''m curious if there''s a cleaner solution. (Note that project
constraints
forbid me to simply <script src=''...prototype.js''> in
the target IFrame...)

-- 
  Phlip
  http://www.greencheese.us/ZeekLand <-- NOT a blog!!!


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What I don''t understand is why on Earth you''d want to do
regular AJAX
from within an IFRAME that you apparently created dynamically.

Regular AJAX is there to do away with IFRAME''s.  Unless you''re
not using
IFRAME solely to do back-end comm, but to actually display stuff.  But
judging from your src attributes, it sure doesn''t look like it!

-- 
Christophe Porteneuve a.k.a. TDD
"[They] did not know it was impossible, so they did it." --Mark Twain
Email: tdd-x+CfDp/qHev2eFz/2MeuCQ@public.gmane.org

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