<option name=”zIndex” default=”false”>
<types>
<type name=”整数”>
</type>
</types>
<description><![CDATA[拖动时的helper(跟随鼠标移动的控件)的z-index值. z-index就是css中的层叠层数, 数值越大, 越在上层.]]></description>
<demos>
<demo>
<comment><![CDATA[初始化]]></comment>
<code><![CDATA[$(‘.selector’).draggable({ zIndex: 2700 });]]></code>
</demo>
<demo>
<comment><![CDATA[获取属性值]]></comment>
<code><![CDATA[var zIndex = $(‘.selector’).draggable(‘option’, ‘zIndex’);]]></code>
</demo>
<demo>
<comment><![CDATA[设置属性值]]></comment>
<code><![CDATA[$(‘.selector’).draggable(‘option’, ‘zIndex’, 2700);]]></code>
