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rechner.html
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<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="styles.css" />
<title>Taschenrechner</title>
</head>
<body>
<!-- Platzhalter für den Header -->
<div id="header-placeholder"></div>
<section class="features">
<section class="container">
<h1 class="center">Taschenrechner</h1>
<div class="calculator">
<input type="text" id="display" disabled>
<div class="button-row">
<button onclick="appendToDisplay('7')">7</button>
<button onclick="appendToDisplay('8')">8</button>
<button onclick="appendToDisplay('9')">9</button>
<button onclick="appendToDisplay('+')">+</button>
<button onclick="appendToDisplay('4')">4</button>
<button onclick="appendToDisplay('5')">5</button>
<button onclick="appendToDisplay('6')">6</button>
<button onclick="appendToDisplay('-')">-</button>
<button onclick="appendToDisplay('1')">1</button>
<button onclick="appendToDisplay('2')">2</button>
<button onclick="appendToDisplay('3')">3</button>
<button onclick="appendToDisplay('*')">*</button>
<button onclick="clearDisplay()" class="clear-button">C</button>
<button onclick="appendToDisplay('0')">0</button>
<button onclick="appendToDisplay('.')">.</button>
<button onclick="appendToDisplay('/')">/</button>
<button onclick="calculateResult()" class="equal-button">=</button>
</div>
</div>
</section>
</section>
<script>
let display = document.getElementById('display');
function appendToDisplay(value) {
display.value += value;
}
function clearDisplay() {
display.value = '';
}
function calculateResult() {
try {
let result = eval(display.value);
display.value = result;
} catch (e) {
display.value = 'Ungültiger Ausdruck';
}
}
</script>
<!-- Platzhalter für den Footer -->
<div id="footer-placeholder"></div>
<!-- Externes JavaScript einbinden -->
<script src="script.js"></script>
</body>
</html>