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setTimeut 延迟时间 #130

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lovelmh13 opened this issue Jul 26, 2021 · 0 comments

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lovelmh13 commented Jul 26, 2021

setTimeout(() => { console.log(1) }, 1)
 
setTimeout(() => { console.log(0) }, 0)

先输出1，再输出0。本来以为是最小延迟 4ms 的原因。

但是如果先打印 setTimeout(() => { console.log(2) }, 2)

setTimeout(() => { console.log(2) }, 2)
 
setTimeout(() => { console.log(1) }, 1)
 
setTimeout(() => { console.log(0) }, 0)

则是 → 1 0 2 的顺序

依然不符合最小延迟 4ms ，这是为什么？

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