Ext 按钮权限设置

getClass:function(v ,metadata ,record ,rowIndex ,colIndex ,store ){ var dutyStage = STORE.getAt(rowIndex).get('XXX')；//获取表格列   var flag = false;   Ext.Ajax.request({      url:‘action.do',      method:'POST',      async:false,      success:function(response){         var text = response.responseText;         if(text == "true"){            flag = true;         }      }   })   if(flag){      return 'x-hidden';   }}

来源：https://www.cnblogs.com/yt2017/p/11685604.html