Calculator HTML, CSS, and JS Code
<!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="style.css">
</head>
<body>
<div class="calculator">
<input type="text" id="display" class="display" disabled />
<div class="buttons">
<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 src="script.js"></script>
</body>
</html>
body {
font-family: Arial, sans-serif;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background-color: #f4f4f4;
margin: 0;
.calculator {
background-color: white;
border-radius: 10px;
box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
padding: 20px;
width: 260px;
.display {
width: 100%;
height: 50px;
text-align: right;
font-size: 24px;
padding: 10px;
margin-bottom: 10px;
border: 2px solid #ddd;
border-radius: 5px;
.buttons {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 10px;
button {
padding: 20px;
font-size: 18px;
background-color: #f0f0f0;
border: 1px solid #ccc;
border-radius: 5px;
cursor: pointer;
transition: background-color 0.3s;
button:hover {
background-color: #ddd;
button:active {
background-color: #ccc;
// Function to append value to the display
function appendToDisplay(value) {
document.getElementById('display').value += value;
// Function to clear the display
function clearDisplay() {
document.getElementById('display').value = '';
// Function to calculate the result
function calculateResult() {
try {
let result = eval(document.getElementById('display').value);
document.getElementById('display').value = result;
} catch (e) {
document.getElementById('display').value = 'Error';
