12332 2007-01-18 21:33:57 -0800 callWebScriptMethod:withArguments: provides no way to determine if an exception was thrown 2007-12-10 06:34:28 -0800 1 1 1 Unclassified WebKit WebKit API 420+ Mac OS X 10.4 NEW http://lists.apple.com/archives/webkitsdk-dev/2006/Apr/msg00016.html InRadar P2 Major --- 1 mrowe webkit-unassigned oldest_to_newest 34239 0 mrowe 2007-01-18 21:33:57 -0800 As per the mailing list post in the specified URL, -[WebScriptObject callWebScriptMethod:withArguments:] translates an exception raised in the called method into a return value of WebUndefined. This makes it impossible to distinguish between a genuine return value of undefined and an exception being thrown. -[WebScriptObject callWebScriptMethod:withArguments:] returns nil in other situations: if the given method doesn't exist on the object, or if it is not a callable. It may make more sense to handle exceptions in a similar way, though the compatibility impact of changing the return value in this case is unknown. 34222 1 mrowe 2007-01-18 21:38:38 -0800 <rdar://problem/4941072>