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51CTO
4 年
JavaScript 异步编程指南 — Give me a Promise
Promise 是一个对象用来表示异步操作的结果,我们没有办法同步的知道它的结果,但是这个结果可以用来表示未来值,将来的某个时间点我们可以拿到该值,它可能成功,也可能失败,也会一直等待下去(这个请看下文 “无法取消的承诺”)。 本文转载自微信公众 ...
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