29519 2016-03-07 14:50:52 +0000 Consider specifying MouseEvent#toElement, fromElement 2017-01-10 20:00:59 +0000 1 1 1 Unclassified CSS CSSOM View unspecified PC All NEW https://github.com/w3c/uievents/issues/84 P2 normal --- 1 zcorpan zcorpan fs miketaylr w3bugs public-css-bugzilla oldest_to_newest 125375 0 zcorpan 2016-03-07 14:50:52 +0000 https://drafts.csswg.org/cssom-view/ https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit/Source/core/events/MouseEvent.cpp&l=225 // MSIE extension - "the object toward which the user is moving the mouse pointer" // MSIE extension - "object from which activation or the mouse pointer is exiting during the event" (huh?) Supported in WebKit and Chromium. Not supported in Gecko. http://software.hixie.ch/utilities/js/live-dom-viewer/saved/3966 https://github.com/search?p=1&q=%22event+fromelement%22&ref=searchresults&type=Code&utf8=%E2%9C%93 shows some usage. 125376 1 zcorpan 2016-03-07 14:59:37 +0000 The only Mozilla bugs I can find mentioning fromElement or toElement are https://bugzilla.mozilla.org/show_bug.cgi?id=961708 https://bugzilla.mozilla.org/show_bug.cgi?id=1205244 Mike, is this something you think Gecko should implement? 125379 2 miketaylr 2016-03-08 02:40:54 +0000 [1] is the only site known to me that has been broken due to lack of support, and luckily an ex-employee got it fixed really quickly. It doesn't seem to be a huge issue for us -- but if we found more proof that it breaks content doing the same thing Blink and WebKit do seems easy. IIRC when looking at [1], Edge still supports this. [1] <https://bugzilla.mozilla.org/show_bug.cgi?id=1205244> (I'm so confused by that other report you listed, I'm not sure what they're asking for). 127089 3 miketaylr 2016-07-29 22:45:36 +0000 Another site depending on this: https://github.com/webcompat/web-bugs/issues/2929#issuecomment-236309173 127249 4 w3bugs 2016-08-28 04:39:08 +0000 Conveniently, Chrome has usage metrics for these 2 properties: * https://www.chromestatus.com/metrics/feature/timeline/popularity/506 * https://www.chromestatus.com/metrics/feature/timeline/popularity/507 128356 5 w3bugs 2017-01-10 20:00:59 +0000 Draft of tests for .toElement & .fromElement: https://github.com/w3c/web-platform-tests/pull/4408