javascript-workshop-2023.april.01/exercise3.html at main · deepcloudlabs/javascript-workshop-2023.april.01 · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Exercise #3</title>
    <script type="text/javascript">
        function fun(x, y, z) { // synchronous/blocking function
            if (Math.random()<0.5){
                throw "Something is wrong!";
            }
            return x * y + z ** 3;
        }

        // let result = fun(1, 2, 3);
        // console.log(`result is ${result}.`);

        function gun(x, y, z) { // synchronous/blocking function
            return new Promise((resolve, reject) => {
                if (Math.random()<0.5){
                    reject("Something is wrong!");
                }
                setTimeout(() => {
                    resolve(x * y + z ** 3);
                }, 5_000)
            });
        }
        gun(1,2,3).then( result => console.log(`result is ${result}.`))
                  .catch( e => console.error(e) );
        console.log("Application is running");
    </script>
</head>
<body>

</body>
</html>