I hit this too. Logged as bug 5557: http://dev.jquery.com/ticket/5557
The issue still exists in 1.4a1. - Lloyd On Sep 22, 6:25 am, weepy <jonah...@gmail.com> wrote: > recently had a problem here ... on line 3968 of jquery.js > > speed: function(speed, easing, fn) { > var opt = typeofspeed=== "object" ?speed: { .... > > the trouble is thatspeedwas "null" rather than "undefined" and > typeofnullis "object", resulting in > > (opt ==null) => true , which throws errors on the following lines. > > perhaps > > var opt = (speed&& typeofspeed=== "object") ?speed: { .... > > Cheers > > weepy -- You received this message because you are subscribed to the Google Groups "jQuery Development" group. To post to this group, send email to jquery-...@googlegroups.com. To unsubscribe from this group, send email to jquery-dev+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/jquery-dev?hl=en.