User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:184.108.40.206) Gecko/20071127 Firefox/220.127.116.11 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:18.104.22.168) Gecko/20071127 Firefox/22.214.171.124 if I change the 'id' property of an element of a form, that element will dissapear from the form.elements collection when you try to access by its NAME. before: form.fieldinput2=[object HTMLInputElement] form.elements.fieldinput2=[object HTMLInputElement] form.elements=[object HTMLInputElement] after: form.fieldinput2=undefined form.elements.fieldinput2=undefined form.elements=[object HTMLInputElement] please note that the field is accessed by its NAME and the fact that the ID was changed should not affect its NAME in any way. also note that the element does not completely disappear from the form. it can still be accessed using its numeric index: form.elements it does the same thing on both linux and windows. IE6 tested and works correctly mozilla 1.7 fails this stripped down test page, but in some more complicated pages appear to work while FF2 fails. Reproducible: Always Steps to Reproduce: 1. create a form <form name=f1 id=f1> <input name=fieldinput1 value=123456789> <input name=fieldinput2 value=555666777 id=fieldinput2 > </form> 2. change the ID: document.getElementById('fieldinput2').id = 'new_id_for_fieldinput2'; 3. now, you get: f.fieldinput2=undefined **WRONG** f.elements.fieldinput2=undefined **WRONG** f.elements=[object HTMLInputElement] CORRECT second case: 1. create the form 2. read the values of the fields 3. change the element ID t. now, you get: f.fieldinput2=[object HTMLInputElement] **CORRECT** f.elements.fieldinput2=undefined **WRONG** f.elements=[object HTMLInputElement] **CORRECT**
This bug was originally reported on Firefox 2.x or older, which is no longer supported and will not be receiving any more updates. I strongly suggest that you update to Firefox 3.6.6 or later, update your plugins (flash, adobe, etc.), and retest in a new profile. If you still see the issue with the updated Firefox, please post here. Otherwise, please close as RESOLVED > WORKSFORME http://www.mozilla.com http://support.mozilla.com/kb/Managing+profiles http://support.mozilla.com/kb/Safe+mode
Whiteboard: [CLOSEME 2010-07-30]
Version: unspecified → 2.0 Branch
No reply, INCOMPLETE. Please retest with Firefox 3.6.8 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 8 years ago
Resolution: --- → INCOMPLETE
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