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Node.js 入门与实战

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Node.js报错：UnhandledPromiseRejectionWarning: Unhandled promise rejection

UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch bl...

Node.js异步编程之Promise

Node.js异步编程之Promise前言先来介绍一下Promise是什么？Promise：当前事件循环得不到的结果，但未来的事件循环会给到你结果是一个状态机pending------还没有得到结果fulfilled/resolved------得到了一个正确的结果rejected------得到了...

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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