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Calc.html
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Calc.html
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<!DOCTYPE html>
<html>
<head>
<style>
body {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
background-color: #000;
}
.calculator {
width: 300px;
border: 1px solid #fff;
border-radius: 10px;
background-color: #222;
box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
padding: 20px;
text-align: center;
}
#display {
width: 100%;
height: 40px;
margin-bottom: 15px;
background-color: #444;
color: #fff;
border: none;
border-radius: 5px;
padding: 5px;
font-size: 20px;
}
.keys {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 10px;
}
button {
width: 100%;
height: 60px;
background-color: #555;
color: #fff;
border: none;
border-radius: 5px;
font-size: 20px;
cursor: pointer;
transition: background-color 0.3s;
}
button:hover {
background-color: #666;
}
</style>
</head>
<body>
<div class="calculator">
<input type="text" id="display" disabled>
<div class="keys">
<button onclick="clearDisplay()">C</button>
<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="appendToDisplay('0')">0</button>
<button onclick="appendToDisplay('.')">.</button>
<button onclick="calculateResult()">=</button>
<button onclick="appendToDisplay('+')">+</button>
</div>
</div>
<script>
let displayValue = '';
function appendToDisplay(value) {
displayValue += value;
document.getElementById('display').value = displayValue;
}
function clearDisplay() {
displayValue = '';
document.getElementById('display').value = displayValue;
}
function calculateResult() {
try {
displayValue = eval(displayValue);
document.getElementById('display').value = displayValue;
} catch (error) {
document.getElementById('display').value = 'Error';
}
}
</script>
</body>
</html>