如何使用Node.js从服务器端的AJAX POST函数接收数据？

I am trying to send data to the server with the Ajax POST function, and then receive it at the server side with Node.js (and then manipulate it there) but the only problem is that I am unable to find any function at the Node.js side to allow me,accomplish this.I would really like it if you guys could help me out on how to do this as even related threads, I visited on many websites were not very helpful.I am trying to send data to the server with the