Archive for April 24th, 2007
Javascript selectedIndex NS_ERROR_FAILURE in Firefox
Tuesday, April 24th, 2007
I was amazed that the top hit in Google for this was the Mozilla source code (which was helpful, but not very user-friendly) so I’m writing up a bit on this confusing error message.
This is a Mozilla (Firefox, Seamonkey, Ephiphany, etc.) exception that gets thrown when you try to set the selectedIndex of a select element out of bounds of its options. The error message (from Firebug) looks like:
uncaught exception: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMHTMLSelectElement.selectedIndex]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: http://www.example.com/test.html :: testSelect :: line 8" data: no]
This is not your standard JavaScript error. It’s not informative, useful, user-friendly, and barely gives you a line number to work with.
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