Accordion: 1.9 - active: null allows panels to be collapsible.

[martinkoutny]

In jQuery UI 1.8, when I initialize Accordion with option active: false it show Accordion with all collapsed panels. After open first panel, user can swith them, but can't close all of them back - one panel is still open.

In jQuery UI 1.9 with same options. It will show accordion with already opened first panel. At API documentation of active option is "This requires the collapsible option to be true.". But when I enable it, accordion starts fine (with all panels collapsed) but when user open one, he can also close it.

I found solution of this different behavior: In 1.9 use option active: null to get same result like use active: false in 1.8.

Is this usage alright? Or it's a bug?

[petersendidit]

active: null should not allow all panels to be collapsed. The only way to have collapsed panels is to use collapsible: true.

[petersendidit]

Pull request to fix this active: null problem ​https://github.com/jquery/jquery-ui/pull/774

[David Petersen]

Accordion: handle active: null. Fixes #8694: 1.9 Accordion - active: null allows panels to be collapsible.

Changeset: c2802d7aa05e6dc7731806a35d9f0057405a22c7

[Scott González]

This actually broke back compat.

[maciejmrozinski]

​https://github.com/jquery/jquery-ui/pull/784

[Scott González]

Fixed in eb392b30359e334a1777ed3a8bc1237ce09528a5.