一种js异步处理方式

<!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 () {

            let ctnTimer;

            function a() {

                let urls = [{

                    file: "a"

                }]

                setTimeout(()=>{

                    urls.forEach(item=>{

                        item.js = "1111";

                    })

                },500)

                b()

                function b() {

                    if (urls.some(function (url) {

                            return !url.js;

                        })) {

                        if (!ctnTimer) clearTimeout(ctnTimer);

                        ctnTimer = setTimeout(b, 500);

                        return;

                    } else {

                        console.log("1111111");

                        c();

                    }

                }

            }

            function c(){

                console.log("32222222222")

            }

            a();

        })()

    </script>

</body>

</html>
巴特西

一种js异步处理方式

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