async/await && promise

来源:互联网 发布:无间道 无间风云 知乎 编辑:程序博客网 时间:2024/06/06 02:52
<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <title>Document</title></head><body>  <script>    function test(num) {      return new Promise((resove, reject) => {        setTimeout(() => {          let random = Math.floor(Math.random() * 100);          if (num > random) {            resove('成功' + num + ',' + random);          } else {            reject('失败' + num + ',' + random);          }        }, 1000)      });    }    (async () => {     let  res = await test(50);     console.log(res);   })() </script></body></html>