Calculator App
About this app
A simple calculator app to perform basic arithmetic calculations.
Calculator App 7 8 9 / 4 5 6 * 1 2 3 - 0 . C + =
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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>Calculator App</title>
<meta name="description" content="A simple calculator app to perform basic arithmetic calculations.">
<meta name="keywords" content="calculator, arithmetic, calculations">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<script type="text/javascript">
try {
// App Javascript Goes Here. Place your entire script content inside the try block for error handling.
// This will run when the DOM is ready.
document.addEventListener("DOMContentLoaded", function() {
// Calculator App
const display = document.getElementById("display");
const buttons = document.querySelectorAll(".button");
buttons.forEach((button) => {
button.addEventListener("click", () => {
const buttonText = button.innerHTML;
if (buttonText === "C") {
display.value = "";
} else if (buttonText === "=") {
try {
const result = eval(display.value);
display.value = result;
} catch (error) {
display.value = "Error";
}
} else {
display.value += buttonText;
}
});
});
});
} catch (error) {
// This will throw the error to the parent window.
throw error;
}
</script>
<style>
/* App CSS Goes Here */
body {
background-color: #f9f9f9;
font-family: 'Roboto', sans-serif;
}
.container {
margin-top: 50px;
max-width: 400px;
background-color: #fff;
border-radius: 10px;
padding: 20px;
box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
.display {
width: 100%;
height: 60px;
font-size: 24px;
margin-bottom: 20px;
padding: 10px;
border: 2px solid #ccc;
border-radius: 5px;
box-sizing: border-box;
}
.button {
width: 80px;
height: 60px;
font-size: 24px;
margin: 5px;
border: none;
border-radius: 5px;
background-color: #f9f9f9;
cursor: pointer;
transition: background-color 0.3s ease;
}
.button:hover {
background-color: #ccc;
}
</style>
</head>
<body>
<div id="main-container" class="container">
<input type="text" id="display" class="display" readonly>
<div>
<button class="button">7</button>
<button class="button">8</button>
<button class="button">9</button>
<button class="button">/</button>
</div>
<div>
<button class="button">4</button>
<button class="button">5</button>
<button class="button">6</button>
<button class="button">*</button>
</div>
<div>
<button class="button">1</button>
<button class="button">2</button>
<button class="button">3</button>
<button class="button">-</button>
</div>
<div>
<button class="button">0</button>
<button class="button">.</button>
<button class="button">C</button>
<button class="button">+</button>
</div>
<div>
<button class="button" style="width: 166px;">=</button>
</div>
</div>
</body>
</html>
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