复制
1function runAsync (x) {
2  const p = new Promise(r => setTimeout(() => r(x, console.log(x)), 1000))
3  return p
4}
5function runReject (x) {
6  const p = new Promise((res, rej) => setTimeout(() => rej(`Error: ${x}`, console.log(x)), 1000 * x))
7  return p
8}
9Promise.all([runAsync(1), runReject(4), runAsync(3), runReject(2)])
10  .then(res => console.log(res))
11  .catch(err => console.log(err))
12