19047 2008-05-14 10:17:25 -0700 Selectors API querySelector won't match uppercase class names in quirks mode 2022-08-09 09:24:09 -0700 1 1 1 Unclassified WebKit DOM 528+ (Nightly build) Mac OS X 10.5 RESOLVED CONFIGURATION CHANGED P2 Normal --- 0 lachlan.hunt webkit-unassigned ahmad.saleem792 alex ap bfulgham catfish.man rniwa sam oldest_to_newest 80366 0 lachlan.hunt 2008-05-14 10:17:25 -0700 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. 112397 1 alex 2009-03-05 10:34:56 -0800 note, this also affects getElementsByClassName in quirks mode 112696 2 catfish.man 2009-03-06 21:45:02 -0800 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). 1889992 3 461503 ahmad.saleem792 2022-08-09 09:23:43 -0700 Created attachment 461503 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! 461503 2022-08-09 09:23:43 -0700 2022-08-09 09:23:43 -0700 Quirk Mode - Test Case Quirk Mode - Webkit Bug - 19047.html text/html 145 ahmad.saleem792 PGh0bWw+Cjxib2R5Pgo8cCBjbGFzcz0iRk9PIj48L3A+CjxzY3JpcHQ+CnZhciBwID0gZG9jdW1l bnQucXVlcnlTZWxlY3RvcigiLkZPTyIpOwpkb2N1bWVudC53cml0ZShwID8gIlBBU1MiIDogIkZB SUwiKTsKPC9zY3JpcHQ+CjwvYm9keT4KPC9odG1sPg==