node.js async await-阿里云

nodejs fs模块结合async await处理fs异步使用

判断服务器上有没有upload目录如果没有创建这个目录有的话不操作1.方式1注意即便没有这个目录但是也要看下有没有同名的无后缀的文件做干扰**判断服务器上有没有upload目录如果没有创建这个目录有的话不操作** const fs = require('fs'); var path = '...

node.js异步控制流程回调，事件，promise和async/await

写这个问题是因为最近看到一些初学者用回调用的不亦乐乎，最后代码左调来又调去很不直观。首先上结论：推荐使用async/await或者co/yield，其次是promise，再次是事件，回调不要使用。接下来是解析，为什么我会有这样的结论首先是回调，理解上最简单，就是我把任务分配出去，当你执行完了我...

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更新时间 2024-03-14 13:03:17

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