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'   })