ASP.NET MVC View ReRenders Part of Itself

In all my years of .NET programming I have not run across a bug as weird as this one. I discovered the problem because some elements on the page were getting double-bound by jQuery. After some (ridiculous) debugging, I finally discovered that once the view is completely done rendering itself and all its children partial views, it goes back to an arbitrary yet consistent location and re-renders itself.

I have been pulling my hair out about this for two days now and I simply cannot get it to render itself only once!

For lack of any better debugging idea, I've painstakingly added logging tracers throughout the HTML just so I can pin down what may be causing this. 开发者_如何学GoFor instance, this code ($log just logs to the console):

...
<script type="text/javascript">var x = 0; $log('1');</script>
<div id="new-ad-form">
<script type="text/javascript">x++;$log('1.5', x);</script>
...

will yield

... <--- this happens before this snippet
1  
1.5 1 
...
10 <--- bottom of my form, after snippet
1.5 2 <--- beginning of part that runs again!
...
9 <--- this happens after this snippet

I've searched my codebase high and low, but there is NOTHING that says that it should re-render part of a page. I'm wondering if the jQueryUI has anything to do with it, as #new-ad-form is the container for a jQueryUI dialog box.

If this is potentially the case, here's my init code for that:

$('#new-ad-form').dialog({

autoOpen: false, modal: true, width: 470, title: 'Create A New Ad', position: ['center', 35], close: AdEditor.reset });

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As I suspected in my original question, the issue is with jQueryUI's dialog() method. After the page renders, the element assigned as the dialog box gets re-rendered, meaning any Javascript contained or loaded in that element is re-run. In my case I had two partial views that had their own JS files.

I wrote the ugliest hack to get around it, but I got it working by creating a global variable and checking it before calling anything in the $(function()). I died a bit writing that hack, but heck, now we can ship!

Thanks for anyone who tried to help!

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Check the JavaScript to insure no requests are accidentally being made back to the same controller. Use Firebug or Fiddler to watch the HTTP requests.

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I may be Waaaay off base here but have you wrapped your script within $(document).ready()?