如何使用Javascript API在Excel中创建数据透视表

Can someone tell me? How to create a pivot table in MS Excel using Javascript API? (Web Addins) I know how to create it with VSTO, VBA. But, I don't know how to create it with Javascript API. Is it real? How can I use add-ins if I can not even create a pivot table? ThanksCan someone tell me? How to create a pivot tabl