Can't initialize an empty <ul> tabset

[torq]

Both Firefox 3.0.5 and Opera 9.02 'hang' or break the flow of execution when attempting to initialize an empty <ul></ul> as a tabset.

If tabtest is a div containing an empty <ul></ul>, then this will fail :

$("#tabtest > ul").tabs();
$("#tabtest > ul").tabs("add", "#fragment1", "tab1");

But if there's something already in the <ul>, then it will succeed, like so :

$("#tabtest > ul").append("<li><a href='#fragment0'><span>tab0</span></a></li>");
$("#tabtest > ul").tabs();
$("#tabtest > ul").tabs("add", "#fragment1", "tab1");

In the attached .html, you should see an alert("done!") if and when the browser has finished creating the tabs. In the failure case, this alert never appears.

[torq]

Semi-self contained demonstration of issue behaviour; needs links to jQuery and jQueryUI

[Scott González]

See ​jquery-ui-dev thread about whether this should be supported.

[4pcbr]

Here is an error behaviour in setting a first tab as selected by default at ui.tabs.js at line 116

o.selected = o.selected === null

o.selected !== undefined ? o.selected : 0; first tab selected by default

I've fixed it next way:

if (this.$tabs.length) {

o.selected = o.selected === null

o.selected !== undefined ? o.selected : 0;

} else {

o.selected = null;

}

[klaus.hartl]

[1582]