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POHow to clear HTML content already sent to the browser, without JavaScript?
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Id
7243028
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2011-08-30T12:20:35.920
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2011-08-30T12:41:25.560
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2011-08-30T12:41:25.560
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text
Body
<p>Bugzilla, Mozilla's issue tracker, has a nice loading screen while the search is being executed. In the days of Ajax, this is nothing special. They do it without any scripting, though, and I want to know how.</p> <p>For example: </p> <ol> <li>Disable JavaScript</li> <li>Open the following URL:<br> <a href="https://bugzilla.mozilla.org/buglist.cgi?short_desc=IDL&resolution=---&resolution=DUPLICATE&query_format=advanced&short_desc_type=allwordssubstr" rel="nofollow">https://bugzilla.mozilla.org/buglist.cgi?short_desc=IDL&resolution=---&resolution=DUPLICATE&query_format=advanced&short_desc_type=allwordssubstr</a></li> </ol> <p>You get a page with an animated image, the text "Please wait while your bugs are retrieved." and a title of "Bugzilla is pondering your search".</p> <h1>Update:</h1> <p>This is the entire DOM while the search is being executed. No meta refresh, no scripts.</p> <pre><code><html> <head> <title>Bugzilla is pondering your search</title> </head> <body> <div style="margin-top: 15%; text-align: center;"> <center> <img width="160" height="87" alt="" src="extensions/BMO/web/images/mozchomp.gif"> </center> <h1>Please wait while your bugs are retrieved.</h1> </div> </body> </html> </code></pre> <p>After a while, the results page appears. The previous HTML vanishes and a completely new DOM appears, including a new title "Bug List".</p> <p>So my question is: how does this work exactly? Please don't list alternative techniques - I am not interested in loading screens at all, but want to use that exact mechanism for something completely different.</p>
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How to clear HTML content already sent to the browser, without JavaScript?
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