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#2
claver2022-08-15 17:45
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代码一:

for (let i=0;i<=1;i++)
{
setTimeout(()=>{console.log(i)},1000)
}
//output: 0 1
代码二:

{
let i=0
{
setTimeout(()=>{console.log(i)},1000)
}
i++
{
setTimeout(()=>{console.log(i)},1000)
}
}
//output: 1 1