ajax请求

function saveData(){
        form.validate();
          if(form.isValid()==false) return;
        var persons = grid.getChanges();
        var tms=nui.get("sxrq").getValue();
        debugger;
                          nui.ajax({
                            url: "com.shtech.dp.cfg.Pc.saveEmplevelInfo.biz.ext",
                            type: ‘POST‘,
                            data: {"persons":persons,"tms":tms},
                            success: function (text) {
                                //CloseWindow("saveSuccess");
                                 grid.reload();
                            },
                            error: function (jqXHR, textStatus, errorThrown) {
                       
                            }
                           });
    }