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<!DOCTYPE html>
<html>
<head>
    <title>Interface dengan JS Rofi'ul Himam XI RPL 2</title>
    <link rel="stylesheet" type="text/css" href="interface.css">
    <link href="https://fonts.googleapis.com/css?family=Bree+Serif&display=swap" rel="stylesheet">
</head>
<body>
    <p id="coba">
        <script type="text/javascript" language="javascript">
            function sayHalo() {
                var nm = document.getElementById('nama').value;
                alert("Halo, " + nm);
            }
        </script>
        <label>Tulis Disini</label>
        <input type="text" id="nama" onchange="sayHalo();" />
    </p>
</body>
</html>