Closed
Bug 250013
Opened 20 years ago
Closed 20 years ago
JavaScript incorrect behaviour with OBJECT tag
Categories
(Toolkit Graveyard :: Error Console, defect)
Tracking
(Not tracked)
RESOLVED
DUPLICATE
of bug 250012
People
(Reporter: vlad.alexander, Assigned: bugs)
Details
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040626 Firefox/0.9.1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040626 Firefox/0.9.1 There seems to be no way using JavaScript to determine if the browser is using the OBJECT tag or alternate content. For example, using this construct, if the browser does not find the object clsid, a textarea is rendered: <object classid="clsid:abc..." id="object1" width="100%" height="400"> <textarea name="alternate1" id="alternate1" cols="60" rows="15"></textarea> </object> However, in Mozilla/FireFox, it is impossible to determine this programmatically. In IE, the following script works but fails in Mozilla/FireFox. if (document.getElementById('object1') && document.getElementById('object1') != null) { alert('object is rendered'); } else { alert('textarea is rendered'); } Reproducible: Always Steps to Reproduce: 1. create an <object> tag with an invalid clsid 2. use JavaScript to test the existence of this <object>. For example: alert(document.getElementById('object1')); Actual Results: JavaScript returns an instance of the object even if the object is not rendered. Expected Results: JavaScript should return "null".
Comment 1•20 years ago
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*** This bug has been marked as a duplicate of 250012 ***
Status: UNCONFIRMED → RESOLVED
Closed: 20 years ago
Resolution: --- → DUPLICATE
Updated•16 years ago
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Product: Firefox → Toolkit
Updated•8 years ago
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Product: Toolkit → Toolkit Graveyard
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Description
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