layui弹出层按钮提交iframe表单的方法

layer.open({
    id: 'LAY_layuipro', //设定一个id，防止重复弹出
    type: 2,
    title:'添加人员信息',
    area: ['600px','340px'],
    btn: ['保存','关闭'],
    yes: function(index, layero){
     var inputForm = $(window.frames["layui-layer-iframe" + index].document).contents().find("#userForm");
     inputForm.ajaxSubmit({
      url:'<%=path%>/version/demand/saveDemand',
      type:'post',
      dataType:'json',
      success:function(result){
       if(result.data=='ok'){
        layer.closeAll();
        layer.alert("添加成功！")
        reloadData();//重新加载列表
       }
      }
     });
    },btn2: function(){
     layer.closeAll();
    },content: '<%=path%>/user/toAdd'
   })