alert&prompt&confirm.html

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

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

<body>
    <!-- alert -->
    <button onclick="alertfunction()">Alert Box</button>
    <!-- prompt -->
    <form>
        <input type="button" value="clickme" onclick="promptfunction()">
    </form>
    <!-- confirm box -->
    <button onclick="confirmfunction()">Click to confirm changes</button>
    <!-- <script> -->
    <script>
        function alertfunction() {
            alert("Hello uh are learning javascript");
        }

        function promptfunction() {
            var value = prompt("Enter your name", "name");
            document.write("You have entered " + value + " ");
        }

        function confirmfunction() {
            confirm("Press any key to confirm changes");
        }
    </script>
</body>

</html>