28800 2015-06-12 03:59:11 +0000 Should 'reset form owner' be invoked on form-associated elements with no form owner when they are inserted into a subtree that is NOT IN the Document? 2017-07-24 10:32:44 +0000 1 1 1 Unclassified WHATWG HTML unspecified Other All RESOLVED MOVED https://html.spec.whatwg.org/#association-of-controls-and-forms P3 normal Unsorted 1 contributor ian annevk ian james manishearth mike Ms2ger mukilanthiagarajan contributor oldest_to_newest 120921 0 contributor 2015-06-12 03:59:11 +0000 Specification: https://html.spec.whatwg.org/multipage/forms.html Multipage: https://html.spec.whatwg.org/multipage/#association-of-controls-and-forms Complete: https://html.spec.whatwg.org/#association-of-controls-and-forms Referrer: https://html.spec.whatwg.org/multipage/ Comment: Should 'reset form owner' be invoked on form-associated elements with no form owner when they are inserted into a subtree that is NOT IN the Document? Posted from: 122.164.202.132 User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 120922 1 mukilanthiagarajan 2015-06-12 04:16:53 +0000 The following script outputs 'true' on both Firefox 38 and Chrome 42: <html> <body> </body> <script> var form = document.createElement("form"); var input = document.createElement("input"); form.appendChild(input); console.log(input.form === form); </script> </html> However, according to the spec, none of the conditions to invoke 'reset the form owner' are satisfied and hence 'input.form' must be 'null'. Specifically, the spec states that 'When an element changes its parent node resulting in a form-associated element and its **form owner (if any)** no longer being in the same home subtree, then the user agent must reset the form owner of that form-associated element.' But both FF and Chrome behave as though they invoke 'reset the form owner' whenever the parent of the element changes when the element currently has no form owner. 120927 2 Ms2ger 2015-06-12 08:40:41 +0000 http://software.hixie.ch/utilities/js/live-dom-viewer/saved/3537 123232 3 ian 2015-09-16 20:30:57 +0000 I don't understand. What about the text quoted in comment 1 requires that it be in a document? 123234 4 james 2015-09-16 20:39:08 +0000 If an element has no form owner then then it can't "no longer be in the same subtree" as that element (since it doesn't exist), so I don't think that text can be invoked to explain the behaviour of the testcase. 128778 5 annevk 2017-07-24 10:32:44 +0000 Found even more weirdness here: https://github.com/whatwg/html/issues/2863.