Simple Calculator
About this app
A responsive simple calculator for basic arithmetic operations.
Simple Calculator Simple Calculator 1 2 3 + 4 5 6 - 7 8 9 × C 0 ÷ =
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Source
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Simple Calculator</title>
<meta name="description" content="A responsive simple calculator for basic arithmetic operations.">
<meta name="keywords" content="calculator, simple calculator, arithmetic, math, web app">
<!-- Libraries -->
<!-- jQuery (3.6.0) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js" crossorigin="anonymous"></script>
<!-- Bootstrap CSS (5.3.3) -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" crossorigin="anonymous">
<!-- Bootstrap JS (5.3.3) -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.min.js" crossorigin="anonymous">
</script>
<!-- Font Awesome (6.6.0) -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@6.6.0/css/fontawesome.min.css" crossorigin="anonymous">
<script type="text/javascript">
try {
document.addEventListener("DOMContentLoaded", function() {
const input = document.getElementById("calc-input");
const buttons = document.querySelectorAll(".calc-button");
const resultDisplay = document.getElementById("result");
let currentInput = '';
buttons.forEach(button => {
button.addEventListener("click", function() {
const value = this.getAttribute("data-value");
if (value === '=') {
try {
currentInput = eval(currentInput);
} catch (e) {
currentInput = "Error";
}
} else if (value === 'C') {
currentInput = '';
} else {
currentInput += value;
}
resultDisplay.value = currentInput;
});
});
});
} catch (error) {
throw error;
}
</script>
<style>
body {
background: linear-gradient(135deg, #ff7e5f, #feb47b);
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
}
#main-container {
background-color: white;
border-radius: 15px;
box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
padding: 30px;
width: 300px;
}
.calc-button {
background-color: #ff7e5f;
color: white;
border: none;
border-radius: 5px;
font-size: 1.5rem;
padding: 10px;
margin: 5px;
cursor: pointer;
transition: background-color 0.3s ease;
}
.calc-button:hover {
background-color: #feb47b;
}
#result {
width: 100%;
height: 40px;
font-size: 1.5rem;
margin-bottom: 10px;
border: 2px solid #ff7e5f;
border-radius: 5px;
}
</style>
</head>
<body>
<div id="main-container" class="container">
<h1 class="text-center">Simple Calculator</h1>
<input type="text" id="result" readonly>
<div class="row">
<div class="col-3"><button class="calc-button" data-value="1">1</button></div>
<div class="col-3"><button class="calc-button" data-value="2">2</button></div>
<div class="col-3"><button class="calc-button" data-value="3">3</button></div>
<div class="col-3"><button class="calc-button" data-value="+">+</button></div>
</div>
<div class="row">
<div class="col-3"><button class="calc-button" data-value="4">4</button></div>
<div class="col-3"><button class="calc-button" data-value="5">5</button></div>
<div class="col-3"><button class="calc-button" data-value="6">6</button></div>
<div class="col-3"><button class="calc-button" data-value="-">-</button></div>
</div>
<div class="row">
<div class="col-3"><button class="calc-button" data-value="7">7</button></div>
<div class="col-3"><button class="calc-button" data-value="8">8</button></div>
<div class="col-3"><button class="calc-button" data-value="9">9</button></div>
<div class="col-3"><button class="calc-button" data-value="*">×</button></div>
</div>
<div class="row">
<div class="col-6"><button class="calc-button" data-value="C">C</button></div>
<div class="col-6"><button class="calc-button" data-value="0">0</button></div>
<div class="col-3"><button class="calc-button" data-value="/">÷</button></div>
<div class="col-3"><button class="calc-button" data-value="=">=</button></div>
</div>
</div>
</body>
</html>
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