raw-javascript-mini-projects/Calculator.html at main · lingkon-record/raw-javascript-mini-projects · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Calculator with Styled Buttons</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f0f0f0;
        }
        .calculator {
            max-width: 300px;
            margin: 0 auto;
            text-align: center;
            padding: 20px;
            background-color: #fff;
            border-radius: 10px;
            box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
        }
        .input-section {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
        }
        .numbers {
            flex: 2;
        }
        .operators {
            flex: 1;
        }
        input[type="text"] {
            width: 100%;
            margin-bottom: 10px;
            padding: 10px;
            font-size: 18px;
        }
        .btn {
            width: 48px;
            height: 48px;
            font-size: 20px;
            margin: 5px;
            border: none;
            border-radius: 50%;
            background-color: #007bff;
            color: #fff;
            cursor: pointer;
            transition: background-color 0.2s;
        }
        .btn:hover {
            background-color: #0056b3;
        }
        .btn-clear {
            width: 100px;
            height: 60px;
            font-size: 24px;
            margin: 5px;
            border: none;
            border-radius: 5px;
            background-color: #ff0000;
            color: #fff;
        }
        .btn-calculate {
            width: 100px;
            height: 60px;
            font-size: 24px;
            margin: 5px;
            border: none;
            border-radius: 5px;
            background-color: #00cc00;
            color: #fff;
        }
    </style>
</head>
<body>
    <div class="calculator">
        <input type="text" id="display" disabled>
        <div class="input-section">
            <div class="numbers">
                <button class="btn" onclick="appendToDisplay('7')">7</button>
                <button class="btn" onclick="appendToDisplay('8')">8</button>
                <button class="btn" onclick="appendToDisplay('9')">9</button>
                <button class="btn" onclick="appendToDisplay('4')">4</button>
                <button class="btn" onclick="appendToDisplay('5')">5</button>
                <button class="btn" onclick="appendToDisplay('6')">6</button>
                <button class="btn" onclick="appendToDisplay('1')">1</button>
                <button class="btn" onclick="appendToDisplay('2')">2</button>
                <button class="btn" onclick="appendToDisplay('3')">3</button>
                <button class="btn" onclick="appendToDisplay('0')">0</button>
            </div>
            <div class="operators">
                <button class="btn" onclick="appendToDisplay('+')">+</button>
                <button class="btn" onclick="appendToDisplay('-')">-</button>
                <button class="btn" onclick="appendToDisplay('*')">*</button>
                <button class="btn" onclick="appendToDisplay('/')">/</button>
            </div>
        </div>
        <button class="btn btn-clear" onclick="clearDisplay()">C</button>
        <button class="btn btn-calculate" onclick="calculateResult()">=</button>
    </div>
    <script>
        function appendToDisplay(value) {
            document.getElementById('display').value += value;
        }

        function clearDisplay() {
            document.getElementById('display').value = '';
        }

        function calculateResult() {
            const display = document.getElementById('display');
            try {
                display.value = eval(display.value);
            } catch (error) {
                display.value = 'Error';
            }
        }
    </script>
</body>
          </html>