if switch

<!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>js</title>

    <style>

        div {

            width: 20rem;

            height: 8rem;

            border: 0.1rem solid red;

            margin: auto;

            font-size: 2rem;

            text-align: center;

            font-size: 2rem;

            margin-top: 3rem;

            border-radius: 1rem;

            padding-top: 5rem;

        .fcolor {

            color: blue;

    </style>

</head>

<body>

    <div id="ceshi"></div>

    <SCript>

        function hello() {

            var random = parseInt(Math.random() * 10);

            var winder = "";

            switch (random) {

                case 1:

                    winder = "First Prize";

                    alert( "First Prize");

                    break;

                case 2:

                    winder = "Second Prize";

                    alert( "Second Prize");

                    break;

                case 3:

                    winder = "Third Prize";

                    alert( "Third Prize");

                    break;

                default:

                    winder = "Thank you for participating";

                    break;

            // if (random == 1) {

            // winder = "1st Prize";

            // }else if(random === 2){

            // winder = "2nd Prize";

            // } else if(random === 3){

            // winder = "3rd Prize";

            // }else{

            // winder = "Thank you for participating";

            // }

            document.getElementById("ceshi").innerHTML = random + "_" + winder;

console.log("--------------",random + "_" + winder);

        window.onload = hello();

    </SCript>

</body>

</html>

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