jQuery + canJS：点击嵌套列表进行多次传播

Question

我正在使用 canJs 1.1.8 和 jQuery。

我有一个包含一些德国州的嵌套列表

<ul>
<li class="states active">
    <i class="icon-screenshot"></i> <span style="background-color: rgb(255, 255, 255); padding-right: 79px;">Bundesland</span>

    <input type="radio" value="state" name="location" class="hidden" checked="checked">

    <ul class="hidden" id="stateList" style="display: none;">
        <li><label class="checkbox"><div class="icheckbox_minimal-gray checked" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="1" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Baden-Württemberg</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="2" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Bayern</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="3" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Berlin</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="4" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Brandenburg</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray checked" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="5" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Bremen</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray checked" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="6" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Hamburg</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="7" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Hessen</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="8" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Mecklenburg-Vorpommern</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="9" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Niedersachsen</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="10" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Nordrhein-Westfalen</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="11" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Rheinland-Pfalz</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="12" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Saarland</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="13" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Sachsen</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="14" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Sachsen-Anhalt</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="15" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Schleswig-Holstein</label></li>
        <li><label class="checkbox"><div class="icheckbox_minimal-gray" style="position: absolute; left: 0px; top: -3px;"><input type="checkbox" value="16" name="state[]" style="position: absolute; opacity: 0;"><ins class="iCheck-helper" style="position: absolute; top: 0%; left: 0%; display: block; width: 100%; height: 100%; margin: 0px; padding: 0px; background: none repeat scroll 0% 0% rgb(255, 255, 255); border: 0px none; opacity: 0;"></ins></div> Thüringen</label></li>


      </ul>
    </li>
</ul>

正如我所说，我正在使用 canJS。所以我创建了一个控制器和一个事件：

'.states click': function (el, e) {

    var stateList = el.find('#stateList'),
        span = el.find('> span');


    if(stateList.is(':hidden')){

        span.css({
            'background-color':'#fff',
            'padding-right': 180 - parseInt(span.outerWidth(),10)+parseInt(span.css('padding-right'),10)
        });

        el.find('#stateList').stop().slideDown();

    // collapse
    }else{
        el.find('#stateList').stop().slideUp();
    }
    return false;
}

如果我点击 .states，就会出现隐藏列表。但如果我单击嵌套列表中的复选框之一，列表也会折叠。 我怎样才能防止这种情况？

嵌套列表是绝对定位的。

这是小提琴 http://jsfiddle.net/qYdwR/1017/

Answer 1

尝试更具体的选择器：

'li.states click': function (el, e) {

你有一些我们可以看到的实时代码吗？

Answer 2

我认为您的问题与事件冒泡有关。如果您单击 .states 列表的子项，则会冒泡到列表中，并触发您的事件处理程序代码。您需要查看事件中的e.target 对象——也就是触发事件的元素，不一定是它注册的那个元素——并且只处理该目标具有.states 类的情况。

'.states click' : function(el, e) {

    if ( !$(e.target).hasClass('.states') ) return false;

    // your handler code here

}