复制
1const promise1 = Promise.resolve('First')
2const promise2 = Promise.resolve('Second')
3const promise3 = Promise.reject('Third')
4const promise4 = Promise.resolve('Fourth')
5
6const runPromises = async () => {
7	const res1 = await Promise.all([promise1, promise2])
8	const res2  = await Promise.all([promise3, promise4])
9	return [res1, res2]
10}
11
12runPromises()
13	.then(res => console.log(res))
14	.catch(err => console.log(err))