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From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Fri, 13 May 2011 21:21:30 +0200
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Subject: Re: A question about refresh
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sheldonlg wrote:

> I have a page that gathers information from a database and shows a
> status.  Asynchronously, some other process modifies that status at a
> shortly later time.
> 
> I have placed a button on the page to do a refresh of the page. I use
> location.reload() as the onClick method.
> 
> Here are the results:
> 1 - Clicking the button does not show the changed status
> 2 - Hitting F5 does not show the changed status
> 3 - Clicking the refresh button on the menu bar does not show the
> changed status
> 4 - Clicking the arrow to the right of the address field DOES show the
> changed status.

If it were not for 2, 3, and 4, window.location.replace(document.URL, true)¹ 
would have sufficed.  However, because of those, you need to apply 
<http://www.mnot.net/cache_docs/>.
 
> I would like to know how I need to code my refresh button on the page so
> that it shows the changed status like #4 above.  Any help will be
> appreciated.

This problem cannot be solved with client-side scripting alone.
 

PointedEars
___________
¹  Always use qualified references: window.location, window.open(…),
   window.alert(…), etc.
-- 
Anyone who slaps a 'this page is best viewed with Browser X' label on
a Web page appears to be yearning for the bad old days, before the Web,
when you had very little chance of reading a document written on another
computer, another word processor, or another network. -- Tim Berners-Lee