common error gives inscrutable error

[[email protected]…]

line 2102:

if ( a[j].constructor == Array )

causes exception: 'Error: a[j] has no properties' if a[j] is undef. That's not very helpful - more helpful would be to discover ahead of time that a[j] is undefined. Even better (if possible) might be to have it serialize an undef there.

[john]

This was due to when you were passing in an undefined parameter in an Ajax request. This has been resolved to no longer error, and instead send the undefined value to the server.