jQuery UI 1.8rc2

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The second release candidate for jQuery UI 1.8 is out and ready for testing. You can download it here:


File Downloads



See the 1.8rc2 Changelog for what’s been fixed since 1.8rc1. For a list of all issues fixed since 1.7.2, see previous 1.8 changelogs.

Upgrade Guide

A full Upgrade Guide for easing the transition between 1.7 and 1.8 is in the works. This will be ready in time for the final release. In the meantime, one of the more significant (and breaking) changes in 1.8 already documented there is a refactor of the widget factory. This means anyone that has built their own plugin that uses the widget factory will need to make a number of changes for compatibility with 1.8. For a view of these changes, see the widget factory section of the Upgrade Guide. Also, see this sample implementation of a simple widget with both the 1.7 and 1.8 widget factories, and the differences, by Scott González.

Plan for 1.8 final

We hope to release jQuery UI 1.8 final after a couple days, assuming there aren’t any blocking issues present in this release candidate.


A big thanks to all that have worked on all the bug fixes and other improvements that have gone into this release. We’ll have a proper listing of all contributors in the final release announcement.

How to report issues

If you find any issues in this release, please do not put them in comments on this post, but instead head over to the Developing jQuery UI Forum. Thank you.

13 thoughts on “jQuery UI 1.8rc2

  1. Hi everyone, thank you for your work 😉

    Small error: “menu is not defined” when using jquery.bgiframe.js
    Line: 5966, instead of ‘menu.element.bgiframe ();’ => ‘this.menu.element.bgiframe ();’

  2. @Ari Maniatis – We’re working on getting it up in time for 1.8 final, which should be in the next week. In the meantime you should be able to use the current ThemeRoller to generate images and a 1.7.2 ui.theme.css and combine that manually with the updated widget css files from 1.8rc2. For how ThemeRoller combines these files into one, see http://jquery-ui.googlecode.com/svn/tags/1.7.2/themes/base/ui.all.css and http://jquery-ui.googlecode.com/svn/tags/1.7.2/themes/base/ui.base.css . There were a few changes in ui.theme.css that you’d have to apply manually. Here’s a diff http://paste.pocoo.org/show/179688/

  3. Hello, thanks for the nice work.
    Question: Is the jQuery 1.4.2 included in the zip file legit?
    I don’t see it in jQuery site.

  4. Pingback: jQuery UI 1.8RC2 is out | Sven Welzel - blog.sven.co.za - www.svenwelzel.com

  5. demuggle on said:

    Thanks for your great work – i would like to ask if you could augment the splitbutton demo?

    For a newbie like me the tricky part is to place the options under the split button:

    Run last action
    Select an action

    option 1
    option 2

    Thanks a lot

  6. Pingback: NC jQuery & JavaScript Camp and Hack Night Recap « Triangle JavaScript

  7. brostbeef on said:

    What’s the current status of 1.8? You mentioned it would be a couple days and it has now been almost 2 weeks without an update.