[Webkit-unassigned] [Bug 33509] selection.modify() should throw an exception if it receives invalid parameters

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=33509





--- Comment #17 from Darin Adler <darin at apple.com>  2010-03-12 14:11:03 PST ---
(In reply to comment #16)
> It would be great if we all could agree on one interface.

Many of the more serious compatibility problems we’ve seen over the years for
Safari came from scripts that stopped; everything would be fine if the script
had kept going even though some small part didn’t do exactly what the developer
wanted. And exceptions stop scripts.

For a new function with no existing compatibility implications, an exception
makes total sense. And for Firefox this is a new function. So I see why it
makes sense to you.

We can add the exceptions and cross our fingers hoping it doesn’t break any
existing sites.

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