wiwiGreen says to Happy Web Developer https://medium.com/taipei-ethereum-meetup/%E9%81%8B%E8%A1%8C%E5%9C%A8%E5%8D%80%E5%A1%8A%E9%8F%88%E4%B8%8A%E7%9A%84%E4%BA%A4%E6%98%93%E6%89%80-%E4%B8%8A-44105897392f 前幾天看到這個寫得還滿清楚