in templates/ydotm/bootstrap3.js [1708:1738]
Tab.prototype.show = function () {
var $this = this.element
var $ul = $this.closest('ul:not(.dropdown-menu)')
var selector = $this.data('target')
if (!selector) {
selector = $this.attr('href')
selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
}
if ($this.parent('li').hasClass('active')) return
var previous = $ul.find('.active:last a')[0]
var e = $.Event('show.bs.tab', {
relatedTarget: previous
})
$this.trigger(e)
if (e.isDefaultPrevented()) return
var $target = $(selector)
this.activate($this.parent('li'), $ul)
this.activate($target, $target.parent(), function () {
$this.trigger({
type: 'shown.bs.tab',
relatedTarget: previous
})
})
}