1. Promise.race的使用：
1 const promise1 = new Promise((resolve, reject) => {
2 setTimeout(resolve, 500, 'one');
3 });
4 const promise2 = new Promise((resolve, reject) => {
5 setTimeout(resolve, 100, 'two');
6 });
7 Promise.race([promise1, promise2]).then((value) => {
8 console.log(value);
9 })
10
11 //输出结果：two
2. Promise.race的实现：
标签：promise1,resolve,const,race,Promise,promise2 From： https://www.cnblogs.com/icyyyy/p/16806004.html