Background 开发没有mock还是比较痛苦的，最开始接入mock-server需要在业务里新开一个 mock 手动写 json，维护成本很高，也不利于共享。一直以来

简单实现一个埋点sdk和管理平台

先说一下最简单的开关配置吧

这半年做了不少的前端基建，虽说系统迷你且有诸多问题，远达不到业界优秀开源的地步，起码目前是满足内部需要。再说罗马也不是一日建成的，先从简单的

In the previous post, we have learned how to design a video player. In fact, a video player is a container containing many tracks, such as bgm, text, and so on. Can we show and edit these tracks? Of course we can. But today, we will focus on the UI part. For the edit operation, we will talk it later.