Promise

最新推荐文章于 2025-09-05 14:01:23 发布

weixin_33730836

最新推荐文章于 2025-09-05 14:01:23 发布

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CC 4.0 BY-SA版权

文章标签： python

原文链接：https://my.oschina.net/u/2494575/blog/2231604

2019独角兽企业重金招聘Python工程师标准>>>

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <script>

        function getPromise() {
            var p = new Promise((resolve, reject) => {
                // 这里放一些异步操作
                // setTimeout(() => {
                //     console.log('异步1执行完成');
                //     // resolve('sdfdasg');
                //     resolve (1111);
                // }, 1000);

                reject('9990')
            });
            return p;
        }
        getPromise().then((res) => {
            console.log(res);
            return 2222;
        }).then((a) => {
            console.log(323);
            console.log(a);
        }).catch((res) => {
            console.log(res);
        });


        /*

        */
        function timeout(ms) {
            return new Promise((resolve, reject) => {
                setTimeout(resolve, ms,'999');
            });
        }

        timeout(3000).then((value) => {
            console.log(value);
        }).then(( )=> {
            console.log(333);
        });

    </script>
</body>

</html>

转载于:https://my.oschina.net/u/2494575/blog/2231604