<!DOCTYPE html>
<html lang="ja">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>カウンタと判定</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            text-align: center;
            margin-top: 50px;
        }
        #number {
            font-size: 2em;
            margin: 20px 0;
        }
        button {
            font-size: 1em;
            padding: 10px 20px;
            margin: 5px;
            cursor: pointer;
        }
        #result {
            margin-top: 20px;
            font-size: 1.2em;
            color: blue;
        }
    </style>
</head>
<body>
    <h1>バ</h1>
    <div id="number">0</div>
    <button id="addButton">追加</button>
    <button id="judgeButton">判定</button>
    <div id="result"></div>

    <script>
        let number = 0;

        const numberDisplay = document.getElementById('number');
        const resultDisplay = document.getElementById('result');

        document.getElementById('addButton').addEventListener('click', () => {
            number++;
            numberDisplay.textContent = number;
        });

        document.getElementById('judgeButton').addEventListener('click', () => {
            let message = '';
            if (number === 1) {
                message = 'あたり';
            } else if (number === 2) {
                message = 'おおあたり';
            } else if (number === 10) {
                message = 'はずれ';
            } else {
                message = 'おおはずれ';
            }
            resultDisplay.textContent = message;
            number = 0;
            numberDisplay.textContent = number;
        });
    </script>
</body>
</html>
