Created attachment 579641 [details] BugSpanDisplayNone.zip User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0.1) Gecko/20100101 Firefox/8.0.1 Build ID: 20111120135848 Steps to reproduce: I execuded a script which hides some items and displays some others with style.display = "inline" and style.display = "none" Actual results: it works on some items, but not for all. In the attached page : When clicking "Suivant" (right under page 1/3) it should hide page 1 and show only page 2, but it shows both page 1 and 2. If clicking Suivant under Page 2, then it hides page 2 and shows page 3, but Page 1 remains visible I added a test in the function which displays and hides items, and FiltrePage1 is detected, so style.display = "none" is applied to that SPAN tag, but it does not have any effect, whereas it has an effect when applied on Page 2 or Page 3. Look for //DEBUG// in the code of the attached page, and uncomment those lines for this test. Expected results: It should show only one page at a time, as it does with Firefox 3.6 and 4.0, with Chrome, with Opera 8 and with IE 4.0, 5.0 and 9.0 (not tested with other versions, but basically, this page has been working everywhere and for a couple of years)
Created attachment 579642 [details] the HTML example page with the missing scripts The HTML example page with the missing scripts (but this did not influence reproducing the bug, it only triggered warnings when trying in IE 9.0).
Attachment #579641 - Attachment is obsolete: true
Confirmed working as described in Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:126.96.36.199) Gecko/20111103 Firefox/3.6.24 ID:20111103063747 See failure in Mozilla/5.0 (Windows NT 5.1; rv:11.0a1) Gecko/20111207 Firefox/11.0a1 ID:20111207031110 No errors in error console...
This could use both a simplified testcase (attached to the bug, single file) and a regression window.
Component: General → Layout
Product: Firefox → Core
QA Contact: general → layout
Keywords: qawanted, regressionwindow-wanted
Attachment #579642 - Attachment mime type: application/octet-stream → application/zip
Further analysis : It is the HTML tag <P ALIGN='CENTER'> which screws up the behavior. See attached simplified page (removing the line "<P ALIGN='CENTER'>" makes it work correctly)
Created attachment 582198 [details] Simplified page (removed most of the HTML not useful to demonstrate the bug)
The page has this markup (with the irrelevant parts removed): <p> <span> <a><h2></h2></a> <table>...</table> </span> An HTML5-compliant parser closes the <p> when it sees the <h2>, so the DOM looks like this: P SPAN A H2 A TABLE and so forth. In particular, the table there is no longer contained in the span, so changing display styles on the span does absolutely nothing to hide it. This is almost certainly a behavior change from the old parser, and almost certainly purposeful. The page should be using <div>, not <span> for things that are meant to contain blocks.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 7 years ago
Component: Layout → HTML: Parser
QA Contact: layout → parser
Resolution: --- → INVALID
Unsurprisingly, other browsers that implement the HTML5 parsing algorithm have the same behavior.
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