<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calculator</title>
<link rel="stylesheet" href="styles.css">
</head>
<body>
<div class="calculator">
<div class="display" id="display">0</div>
<div class="buttons">
<button onclick="clearDisplay()">AC</button>
<button onclick="deleteLast()">DEL</button>
<button onclick="appendOperation('/')">/</button>
<button onclick="appendOperation('*')">*</button>
<button onclick="appendNumber('7')">7</button>
<button onclick="appendNumber('8')">8</button>
<button onclick="appendNumber('9')">9</button>
<button onclick="appendOperation('-')">-</button>
<button onclick="appendNumber('4')">4</button>
<button onclick="appendNumber('5')">5</button>
<button onclick="appendNumber('6')">6</button>
<button onclick="appendOperation('+')">+</button>
<button onclick="appendNumber('1')">1</button>
<button onclick="appendNumber('2')">2</button>
<button onclick="appendNumber('3')">3</button>
<button onclick="calculateResult()">=</button>
<button onclick="appendNumber('0')" class="zero">0</button>
<button onclick="appendNumber('.')">.</button>
<button onclick="appendOperation('%')">%</button>
</div>
</div>
<script src="script.js"></script>
</body>
</html>
body {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background: linear-gradient(to right, #00f7ff, #072122);
margin: 0;
font-family: Arial, sans-serif;
}
.calculator {
background-color: #dcdcdc;
padding: 20px;
border-radius: 10px;
box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}
.display {
font-size: 2em;
background-color: white;
padding: 10px;
margin-bottom: 10px;
text-align: right;
border-radius: 5px;
border: 1px solid #ddd;
}
.buttons {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 10px;
}
button {
font-size: 1.5em;
padding: 20px;
border: none;
border-radius: 5px;
cursor: pointer;
background-color: #f0f0f0;
}
button:active {
background-color: #ddd;
}
let display = document.getElementById('display');
let currentInput = '';
let currentOperation = '';
function clearDisplay() {
currentInput = '';
currentOperation = '';
display.innerText = '0';
}
function deleteLast() {
currentInput = currentInput.slice(0, -1);
display.innerText = currentInput || '0';
}
function appendNumber(number) {
currentInput += number;
display.innerText = currentInput;
}
function appendOperation(operation) {
if (currentInput === '' || "+-*/%".includes(currentInput.slice(-1))) return; // Prevent consecutive operators
currentOperation = operation;
currentInput += operation;
display.innerText = currentInput;
}
function calculateResult() {
if (currentInput === '' || "+-*/%".includes(currentInput.slice(-1))) return; // Prevent calculation if input ends with an operator
try {
// Replace percentage with appropriate calculation
currentInput = currentInput.replace(/(\d+)%/, (match, p1) => (parseFloat(p1) / 100).toString());
currentInput = eval(currentInput).toString();
display.innerText = currentInput;
} catch (error) {
display.innerText = 'Error';
currentInput = '';
}
}
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