Javascript 1 加入頁面

Javascript 1 加入頁面

Javascript 1 加入頁面

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title></title>
    <script>
        setTimeout(wakeUpUser, 5000);
        function wakeUpUser(){
            alert("This is an alert!");
        }

    </script>
    <body>
    </body>
</head>
</html>

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