15049 2011-12-03 00:19:14 +0000 The description of opener doesn't say what the value is if any of the listed conditions do not hold. I think null is the correct value for windows with no opener, but the IDL lists its type as WindowProxy instead of WindowProxy?, which would seem to indic 2012-07-18 18:47:17 +0000 1 1 1 Unclassified WHATWG HTML unspecified Other other RESOLVED FIXED http://www.whatwg.org/specs/web-apps/current-work/#dom-opener P3 normal Unsorted 1 contributor ian ian mike contributor oldest_to_newest 60869 0 contributor 2011-12-03 00:19:14 +0000 Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/browsers.html Multipage: http://www.whatwg.org/C#dom-opener Complete: http://www.whatwg.org/c#dom-opener Comment: The description of opener doesn't say what the value is if any of the listed conditions do not hold. I think null is the correct value for windows with no opener, but the IDL lists its type as WindowProxy instead of WindowProxy?, which would seem to indicate that this property can never be null. Posted from: 66.114.38.251 User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:10.0a2) Gecko/20111123 Firefox/10.0a2 61195 1 ian 2011-12-07 23:58:12 +0000 Oops! 63451 2 contributor 2012-01-31 21:15:47 +0000 Checked in as WHATWG revision r6953. Check-in comment: window.opener should return null in certain cases http://html5.org/tools/web-apps-tracker?from=6952&to=6953