There’s a fine line between being on the bleeding edge and the lunatic fringe

With the release of jQuery 1.4 today, I dropped it into an app to see how it did.

I didn’t have any problems, except when it came to using jQuery UI 1.7.2.

When I open up a jQuery UI Dialog, I want the ‘X’ in the upper right corner to be hidden to force the users to use the buttons. That’s easy enough to do:

When using jQuery 1.3.2 with jQuery UI 1.7.2, this works as expected:

When using jQuery 1.4 with jQuery UI 1.7.2, this doesn’t work as expected:

See for yourself…

• Demo using jQuery 1.3.2
• Demo using jQuery 1.4
• Download the demos in a zip file

I’m not sure if this is a bug in jQuery 1.4, or if jQuery UI 1.7.2 just isn’t ready to be used with jQuery 1.4. I’m getting this problem consistently in FF 3.5 and IE8 on Windows 7 x64.

Ideas anybody?