RESOLVED CONFIGURATION CHANGED 19047
Selectors API querySelector won't match uppercase class names in quirks mode 
https://bugs.webkit.org/show_bug.cgi?id=19047
Summary Selectors API querySelector won't match uppercase class names in quirks mode
Lachlan Hunt
Reported 2008-05-14 10:17:25 PDT
The Selectors API querySelector and querySelectorAll methods won't match uppercase class names in quirks mode. e.g. Try running this script in quirks mode. <p class="FOO"></p> <script> var p = document.querySelector(".FOO"); document.write(p ? "PASS" : "FAIL"); </script> The same script works correctly in standards mode.
Attachments
Quirk Mode - Test Case (145 bytes, text/html)
2022-08-09 09:23 PDT, Ahmad Saleem 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Alex Russell
Comment 1 2009-03-05 10:34:56 PST
note, this also affects getElementsByClassName in quirks mode
David Smith
Comment 2 2009-03-06 21:45:02 PST
I can't reproduce this (I pasted the provided testcase into a document and loaded it in safari 4 beta, and it said PASS, same with r40738).
Ahmad Saleem
Comment 3 2022-08-09 09:23:43 PDT
Created attachment 461503 [details] Quirk Mode - Test Case I changed the test case from Comment 0 in JSfiddle below: Link - https://jsfiddle.net/6r9odj5x/show All browsers (Chrome Canary 106, Firefox Nightly 105 and Safari 15.6 on macOS 12.5) are saying "PASS" for the test case, I am going to mark this as "RESOLVED CONFIGURATION CHANGED" Even with above "Quirk Mode" test case, all browsers are showing "PASS". Thanks!
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