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笔者也早就觉得哪里不对劲,终于有人把实话说了出来:async/await 可能会带来麻烦。本篇精读正是围绕这一观点展开,并结合本仓库中 《AsyncAwait 优越之处》 、 《Javascript 事件循环与异步》 等姊妹篇,从语法糖本质、并发语义、事件循环三个层面把它讲透。
本内容遵循CC 4.0 BY-SA版权协议 async/await 是 JavaScript 中基于 Promise 的语法糖,用于以同步风格编写异步代码。async 修饰函数使其返回 Promise,await 暂停执行直至 Promise 完成。需在 async 函数内使用 ...