<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="page">
    <div id="header">Stoppeklokke</div>
    <div id="buttons">
        <button onclick="myTimer()">Start</button>
        <button onclick="stopTimer()">Stopp</button>
        <button onclick="resetTimer()">Rundetid</button>
    </div>
    <div id="time"></div><br>
    <div id="round"></div><br>
    </div>
    <script>
        let time = 1;
        function myTimer() {
             setInterval(counter,1000)
        }
        
        function counter() {
            document.getElementById('time').innerHTML = time;
            ++time;
        }
        function resetTimer() {
            document.getElementById('round').innerHTML += `<li>${time -1} sekunder</li`;
            clearInterval(time)
            time = 0;
        }
        function stopTimer(){
            location.reload();
        }
    </script>
</body>
</html>