[Promise作用](Promise%E4%BD%9C%E7%94%A8.md) [状态与过程](Promise%E7%8A%B6%E6%80%81%E4%B8%8E%E8%BF%87%E7%A8%8B.md) [基本使用](Promise%E5%9F%BA%E6%9C%AC%E4%BD%BF%E7%94%A8.md) [常用API](Promise%E5%B8%B8%E7%94%A8API.md)