复制
1const myPromise = () => Promise.resolve('I have resolved!')
2
3function firstFunction() {
4  myPromise().then(res => console.log(res))
5  console.log('second')
6}
7
8async function secondFunction() {
9  console.log(await myPromise())
10  console.log('second')
11}
12
13firstFunction()
14secondFunction()