Rosie Matsen

icon location My name is Rosie Matsen, I am a college student and most of the time I have to study. I enjoy rap and dancing, as well as playing basketball.

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第 13 题：Promise 构造函数是同步执行还是异步执行，那么 then 方法呢？

promise是微观任务，setTimeout是宏观任务，先执行微观任务，在执行宏观任务；微观任务里，先执行同步再执行异步 所以结果是 124536