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Fun Calculator App

Aug 12, 2026

About this app

A colorful and interactive calculator app to perform operations with two numbers.

Fun Calculator App Fun Calculator Calculate

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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>Fun Calculator App</title>
<meta name="description" content="A colorful and interactive calculator app to perform operations with two numbers.">
<meta name="keywords" content="calculator, subtract, math, interactive, app, web">

<!-- Libraries -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.min.js" crossorigin="anonymous"></script>
<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 {
// This will run when the DOM is ready.
document.addEventListener("DOMContentLoaded", function() {
document.getElementById("calculate-btn").addEventListener("click", function() {
const A = parseFloat(document.getElementById("valueA").value);
const B = parseFloat(document.getElementById("valueB").value);
if (!isNaN(A) && !isNaN(B)) {
const C = B - A;
const answer = C - A;
document.getElementById("result").innerHTML = `C = ${C}<br>Answer = ${answer}`;
} else {
document.getElementById("result").innerHTML = "Please enter valid numbers!";
}
});
});
} catch (error) {
throw error;
}
</script>

<style>
body {
background: linear-gradient(135deg, #74ebd5, #9face6);
}
#main-container {
margin-top: 50px;
text-align: center;
padding: 30px;
border-radius: 15px;
background-color: white;
box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}
input {
margin: 15px 0;
width: 200px;
padding: 10px;
border-radius: 5px;
border: 1px solid #e0e0e0;
transition: border 0.3s;
}
input:focus {
border: 2px solid #3498db;
outline: none;
}
button {
margin-top: 20px;
padding: 10px 20px;
background-color: #3498db;
color: white;
border: none;
border-radius: 5px;
cursor: pointer;
transition: background 0.3s;
}
button:hover {
background-color: #2980b9;
}
#result {
margin-top: 20px;
font-size: 1.5em;
color: #2c3e50;
font-weight: bold;
animation: fadeIn 0.5s;
}
@keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
</style>
</head>
<body>
<div id="main-container" class="container">
<h1>Fun Calculator</h1>
<div>
<input type="number" id="valueA" placeholder="Enter value A" required>
<input type="number" id="valueB" placeholder="Enter value B" required>
<br>
<button id="calculate-btn">Calculate</button>
</div>
<div id="result"></div>
</div>
</body>
</html>