I have the same problem, but i solved with a little trick:
1. Attach to mousedown event of .jqx-tabs-close-button. I call jqxTabs addLast method first, then i call jquery mousedown method.
2. On mousedown event, for example do:
if (confirm(“Close?”)) {
$(this).trigger(‘click’);
return true;
}
return false
Works for me!
MG