Tabbbing through elements on a Dijit Dialog does not work correctly

[amathias]

If I have a Dijit Dialog that contains a number of form elements on it, each with a tab index specified, when I tab through the elements the 9th tab press always sends me back to the first element on the dialog box.

This appears to be caused by the walkTree function defined inside dijit._getTabNavigable in a11y.js. It is grabbing the tabindexes from the elements, which are strings, and then comparing them using < and >= as if they were integers. Since "10" >= "9" returns false, it doesn't set that element as the highest. The end result is that the item with tabindex 9 is set as the highest element even if I have 30 or 50 elements on the page.

[bill]

Ah good catch, I'll fix.

[bill]

In [28200]:

Make sure to treat tabindex as number, not string, so comparisons work correctly, fixes #15036 !strict.