@mcfog 做了一下练习题, 感觉实现了功能, 但没发现自己存在的问题...

```
const api = (num) => {
const allNum = 10;
return new Promise(resolve => {
setTimeout(() => {
if (num <= allNum) {
resolve([num])
} else {
resolve(false)
}
}, 100)
})
}

const getList = (num = 1) => {
return new Promise((resolve, reject) => {
api(num).then(res => {
if (res) {
resolve(res);
} else {
reject({
currentPage: num,
error: {
code: 9876,
message: 'can not find the page.'
}
});
}
})
})
}

const getWholeList = (num = 1, list = []) => {
return new Promise(resolve => {
getList(num).then(res => {
resolve(getWholeList(num + 1, [...list, ...res]))
}).catch(e => {
if (e.error.code === 9876) {
resolve(list)
}
})
})
}

getWholeList().then(res => {
console.log('完成', res)
})
```