我带过 7 个前端团队,面试过 300+ 候选人,90% 的人能写出正确的 async/await 代码,但只有不到 15% 能说清: 为什么 await 后面的表达式必须返回 Promise?为什么 await 会暂停函数执行却不阻塞主线程?为什么 Promise.reject () 抛出的错误,在没有 .catch () 或 try/catch 时,V8 会触发 ...
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I am studying asynchronous processing in JavaScript. For the past few days, I've been wandering around async, await, and Promise. Yesterday, my brain was pretty much overflowing with processing logic.
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