Today we release MooTools Core 1.4.1 which is a small maintenance release and as such only fixes bugs that were introduced in previous releases. We have fixed the mousewheel event in Firefox, Element.fade sets the visibility CSS-property again, Event.Delegation now behaves properly if you use fireEvent and we have fixed a couple of issues with Element.setProperty and Element.removeProperty.

Upgrading from 1.4.0 should not cause any backward incompatibilities. We recommend all users to update to 1.4.1 as soon as possible.

Get it!

• Download MooTools Core 1.4.1; Build MooTools Core 1.4.1


• Fork / clone MooTools Core 1.4.1 from GitHub, and build it yourself with Packager.


• Google CDN (will be updated soon)


• Browse the Documentation for Core & More.