Promise.all等待所有Promise执行完成

代码示例

const promise1 = new Promise((resolve, reject) => {
  setTimeout(() => { resolve("func1");
  }, 1000);
});

const promise2 = new Promise((resolve, reject) => {
  setTimeout(() => { resolve("func1");
  }, 1000);
});

Promise.all([promise1, promise2]).then((ret) => {
  console.log(ret);
  // [ 'func1', 'func1' ] const [ret1, ret2] = ret;
  console.log(ret1, ret2);
  // func1 func1
});


  

 

  
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参考
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/all

文章来源: pengshiyu.blog.csdn.net，作者：彭世瑜，版权归原作者所有，如需转载，请联系作者。

原文链接：pengshiyu.blog.csdn.net/article/details/106130978