Fixed

unknown
plain_text
a year ago
7.0 kB
Indexable
Never
<!DOCTYPE html>
<html>
<head>
    <title>Calculadora Científica</title>
    <style>
        /* Estilos para la apariencia visual */
        body {
            font-family: Arial, sans-serif;
            background-color: #f2f2f2;
            margin: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
        }
        .calculator {
            width: 400px;
            padding: 20px;
            background: linear-gradient(135deg, #f6f6f6, #e0e0e0);
            border-radius: 10px;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
            animation: breathe 4s infinite;
        }
        @keyframes breathe {
            0%, 100% {
                box-shadow: 0 0 20px rgba(0, 0, 0, 0.2), 0 0 30px rgba(255, 0, 0, 0.5);
            }
            16.666%, 83.333% {
                box-shadow: 0 0 20px rgba(0, 0, 0, 0.2), 0 0 30px rgba(255, 165, 0, 0.5);
            }
            33.333%, 66.666% {
                box-shadow: 0 0 20px rgba(0, 0, 0, 0.2), 0 0 30px rgba(255, 255, 0, 0.5);
            }
            50% {
                box-shadow: 0 0 20px rgba(0, 0, 0, 0.2), 0 0 30px rgba(0, 128, 0, 0.5);
            }
            66.666%, 33.333% {
                box-shadow: 0 0 20px rgba(0, 0, 0, 0.2), 0 0 30px rgba(0, 0, 255, 0.5);
            }
            83.333%, 16.666% {
                box-shadow: 0 0 20px rgba(0, 0, 0, 0.2), 0 0 30px rgba(75, 0, 130, 0.5);
            }
        }
        input[type="text"] {
            width: 100%;
            padding: 10px;
            margin-bottom: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
        }
        .btn {
            display: inline-block;
            width: 70px;
            height: 40px;
            margin: 5px;
            text-align: center;
            line-height: 40px;
            border: 1px solid #ccc;
            border-radius: 5px;
            cursor: pointer;
            background-color: #f9f9f9;
            transition: background-color 0.3s;
        }
        .btn:hover {
            background-color: #eaeaea;
        }
        #equals {
            background-color: green;
            color: white;
        }
    </style>
</head>
<body>
    <div class="calculator">
        <form method="post">
            <input type="text" name="expression" id="display" value="<?= $_POST['expression'] ?? '' ?>">
            <div>
                <!-- Botones numéricos y operadores -->
                <div>
                    <div class="btn" onclick="appendText('7')">7</div>
                    <div class="btn" onclick="appendText('8')">8</div>
                    <div class="btn" onclick="appendText('9')">9</div>
                    <div class="btn" onclick="appendText('/')">/</div>
                </div>
                <div>
                    <div class="btn" onclick="appendText('4')">4</div>
                    <div class="btn" onclick="appendText('5')">5</div>
                    <div class="btn" onclick="appendText('6')">6</div>
                    <div class="btn" onclick="appendText('*')">*</div>
                </div>
                <div>
                    <div class="btn" onclick="appendText('1')">1</div>
                    <div class="btn" onclick="appendText('2')">2</div>
                    <div class="btn" onclick="appendText('3')">3</div>
                    <div class="btn" onclick="appendText('-')">-</div>
                </div>
                <div>
                    <div class="btn" onclick="appendText('0')">0</div>
                    <div class="btn" onclick="appendText('.')">.</div>
                    <button class="btn" id="equals" name="equals" type="submit">=</button>
                    <div class="btn" onclick="appendText('+')">+</div>
                </div>
                <!-- botones científicos -->
                <div>
                    <div class="btn" onclick="appendText('Math.sqrt(')">√</div>
                    <div class="btn" onclick="calculatePower(2)">x²</div>
                    <div class="btn" onclick="calculatePower(3)">x³</div>
                    <div class="btn" onclick="appendText('**')">^</div>
                    <div class="btn" onclick="appendText('Math.exp(')">eˣ</div>
                    <div class="btn" onclick="appendText('Math.log10(')">log</div>
                    <div class="btn" id="clear" onclick="clearDisplay()">C</div>
                    <div class="btn" onclick="appendText('(')">(</div>
                    <div class="btn" onclick="appendText(')')">)</div>
                </div>
            </div>
        </form>
    </div>

    <?php
    if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['expression'])) {
        $expression = $_POST['expression'];
        $result = '';
        if ($expression !== '') {
            $result = calculateExpression($expression);
            echo "<script>console.log('Resultado: $result');</script>"; // Imprimir resultado en consola
        }
    }

    function calculateExpression($expression) {
        try {
            $expression = str_replace('^', '**', $expression); // Reemplazar '^' con '**'
            $expression = str_replace('**2', '**2', $expression); // Reemplazar '**2' con '**2'
            $expression = str_replace('**3', '**3', $expression); // Reemplazar '**3' con '**3'
            $expression = str_replace('Math.sqrt(', 'sqrt(', $expression); // Reemplazar 'Math.sqrt(' con 'sqrt('
            $expression = str_replace('Math.exp(', 'exp(', $expression); // Reemplazar 'Math.exp(' con 'exp('
            $expression = str_replace('Math.log10(', 'log10(', $expression); // Reemplazar 'Math.log10(' con 'log10('
            return eval("return $expression;");
        } catch (Throwable $e) {
            return 'Error';
        }
    }
    ?>

    <script>
        function appendText(text) {
            const display = document.getElementById('display');
            display.value += text;
        }

        function calculatePower(power) {
            const display = document.getElementById('display');
            const currentValue = parseFloat(display.value);
            if (!isNaN(currentValue)) {
                display.value = currentValue ** power;
            }
        }

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

        <?php if (isset($result)) : ?>
            window.onload = function() {
                const result = '<?= $result ?>';
                if (result !== '') {
                    const display = document.getElementById('display');
                    display.value = result;
                }
            };
        <?php endif; ?>
    </script>
</body>
</html>