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#6556 closed bug (fixed)

Opened May 10, 2010 09:07PM UTC

Closed October 17, 2010 11:21PM UTC

.data(object) breaks event handling

Reported by: jaredjacobs Owned by:
Priority: undecided Milestone: 1.4.3
Component: event Version: 1.4.2
Keywords: data, event handler, handle Cc:
Blocked by: Blocking:

Calling .data({...}) results in a JS exception in jQuery.event.handle whenever a previously bound event handler is fired.

The documentation for .data() says: "Until jQuery 1.4.2, jQuery itself used the .data() method to save information about events that have been bound to the element, using a data item named 'events'."

There is unfortunately still some code in jQuery 1.4.2 that assumes that there is data about event bindings stashed in .data("events"). For example, this line from jQuery.event.handle is the one I'm seeing blow up:

var events =, "events"), handlers = events[ event.type ];

A quick search for the JS string "events" turns up two other similar sites: one in liveHandler (non-fatal) and one in (probably fatal).

Attachments (0)
Change History (5)

Changed May 10, 2010 09:13PM UTC by jaredjacobs comment:1

Here's an example that triggers the problem. It was posted in the comments 3 months ago.

$('<div>click me</div>').click( function(){alert('where?')} ).data( {key: 'val'} ).appendTo( 'body' );

Changed May 10, 2010 09:16PM UTC by jaredjacobs comment:2

_comment0: Workaround, of course, is to call .data(k1: v1).data(k2: v2)...1287253270453041

Workaround, of course, is to call .data(k1, v1).data(k2, v2)...

Changed October 16, 2010 04:18PM UTC by petersendidit comment:3

This seems to be fixed in 1.4.3

Changed October 16, 2010 06:23PM UTC by jaredjacobs comment:4

agreed. thanks team!

Changed October 17, 2010 11:21PM UTC by snover comment:5

priority: → undecided
resolution: → fixed
status: newclosed