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calculator.html #1002

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86 changes: 86 additions & 0 deletions calculator.html
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Original file line number Diff line number Diff line change
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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</title>
<style>
body {
font-family: Arial, sans-serif;
text-align: center;
padding: 50px;
}
#calculator {
display: inline-block;
padding: 20px;
border: 2px solid #000;
border-radius: 10px;
}
input[type="text"] {
width: 100%;
height: 40px;
margin-bottom: 10px;
font-size: 20px;
text-align: right;
}
button {
width: 23%;
height: 50px;
font-size: 18px;
margin: 1%;
cursor: pointer;
}
</style>
</head>
<body>
<h1>Simple Calculator</h1>
<div id="calculator">
<input type="text" id="result" disabled>
<br>
<button onclick="clearResult()">C</button>
<button onclick="appendValue('(')">(</button>
<button onclick="appendValue(')')">)</button>
<button onclick="appendValue('/')">/</button>
<br>
<button onclick="appendValue('7')">7</button>
<button onclick="appendValue('8')">8</button>
<button onclick="appendValue('9')">9</button>
<button onclick="appendValue('*')">*</button>
<br>
<button onclick="appendValue('4')">4</button>
<button onclick="appendValue('5')">5</button>
<button onclick="appendValue('6')">6</button>
<button onclick="appendValue('-')">-</button>
<br>
<button onclick="appendValue('1')">1</button>
<button onclick="appendValue('2')">2</button>
<button onclick="appendValue('3')">3</button>
<button onclick="appendValue('+')">+</button>
<br>
<button onclick="appendValue('0')">0</button>
<button onclick="appendValue('.')">.</button>
<button onclick="calculateResult()">=</button>
</div>

<script>
const resultInput = document.getElementById('result');

function appendValue(value) {
resultInput.value += value;
}

function clearResult() {
resultInput.value = '';
}

function calculateResult() {
try {
resultInput.value = eval(resultInput.value);
} catch (error) {
alert('Invalid input');
clearResult();
}
}
</script>
</body>
</html>