Events for trees in navigation not triggered

[NePheus]

The collpase and expand events for the tree navigation items are never triggered. You want to trigger it on the ul elements of the depending tree, but its always undefined. See:
https://github.com/almasaeed2010/AdminLTE/blob/master/dist/js/adminlte.js#L457
https://github.com/almasaeed2010/AdminLTE/blob/master/dist/js/adminlte.js#L468
this.element is always undefined because 'this' is the reference to the slideDown/Up event. You have to save it to a variable before the animate call, i.e.:

var $element = $(this.element);
tree.slideDown(this.options.animationSpeed, function () {
      $element.trigger(expandedEvent)
})

Then the event gets triggered as it should.

[almasaeed2010]

@NePheus good catch! Thanks for reporting. Will fix soon.

[almasaeed2010]

Fixed in master (v2.4)