1、页面中引入隐藏域
<input type="hidden" id="area_desc"/>
2、通过在属性中设置
onchange:function(val){
document.getElementById('area_desc').value = val;
}
3、在<span></span>写事件
<script type="dojo/on" data-dojo-event="change">
document.getElementById('area_desc').value = this.item.id;
</script>