layui 实现实时刷新一个外部的div

//html代码
<div class="layui-inline layui-show-xs-block" style="margin-left: 10px" id="sumDiv">
	<span>SOP合计:</span>
	<span>${totalNum}</span>
	<span>套</span>
</div>

 $("#sumDiv").load(location.href + " #sumDiv");

$(window.parent.document).find("#sumDiv").load(parent.location.href + " #sumDiv");