24449 2014-01-30 15:33:18 +0000 Define when a StyleSheet is added to a StyleSheetList collection 2014-01-30 15:33:18 +0000 1 1 1 Unclassified CSS CSSOM unspecified PC All NEW P2 normal --- 1 miketaylr zcorpan public-css-bugzilla oldest_to_newest 99478 0 miketaylr 2014-01-30 15:33:18 +0000 Hi there, [1] details a site compatibility issue reported by a Firefox for Android user. The main issue is that a site is relying on the presence of a style sheet in the style sheet collection to indicate that the stylesheet has been fully loaded (see [2]). I wrote a simple test [3], and it seems that Firefox, Internet Explorer and Presto Opera all add the style sheet immediately to the document.styleSheets collection while Safari and Chrome (presumably others with WebKit heritage) wait for the load event (or thereabouts). From my reading of [4], I would suspect that the non-WebKit behavior is correct, but perhaps there should be some language in the spec to clarify if a stylesheet should be added before or after it's loaded/parsed. [1] <https://bugzilla.mozilla.org/show_bug.cgi?id=958415> [2] <https://github.com/ameba-proteus/chikuwa.js/blob/master/chikuwa.js#L1067-L1068> [3] <http://dhtml5.com/tmp/stylesheets-length.html> [4] <http://dev.w3.org/csswg/cssom/#css-style-sheet-collections>