iOS 用 Swift, browser 用 Javascript。 後端也都不一樣，有 python 的 django，php 的 laravel，ruby 的 rails，c# 的 ASP.NET，JavaScript 的 node.js。The list goes on。 還需要選 database，MySQL，PostgreSQL，NoSQL。 前端也很複雜，JavaScript 自己就有 Angular.js，Vue.js，React.js。 ----- Wordpress 是developer 的惡夢，wix & squarespace 功能性不夠。Shopify只適合ecommerce。 2021年

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