Calculator App
About this app
A mobile calculator app with various mathematical functions
Calculator App 7 8 9 / 4 5 6 * 1 2 3 - 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>Calculator App</title>
<meta name="description" content="A mobile calculator app with various mathematical functions">
<meta name="keywords" content="calculator, math, mobile app">
<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.
$(document).ready(function() {
// Variables
let currentNumber = "";
let operator = "";
let result = 0;
// Function to update the display
function updateDisplay() {
$("#display").text(currentNumber);
}
// Function to reset the calculator
function resetCalculator() {
currentNumber = "";
operator = "";
result = 0;
}
// Event listener for number buttons
$(".number").click(function() {
currentNumber += $(this).text();
updateDisplay();
});
// Event listener for operator buttons
$(".operator").click(function() {
operator = $(this).text();
result = parseFloat(currentNumber);
currentNumber = "";
updateDisplay();
});
// Event listener for equals button
$("#equals").click(function() {
let secondNumber = parseFloat(currentNumber);
switch (operator) {
case "+":
result += secondNumber;
break;
case "-":
result -= secondNumber;
break;
case "*":
result *= secondNumber;
break;
case "/":
result /= secondNumber;
break;
case "%":
result %= secondNumber;
break;
case "^":
result = Math.pow(result, secondNumber);
break;
}
currentNumber = result.toString();
operator = "";
updateDisplay();
});
// Event listener for clear button
$("#clear").click(function() {
resetCalculator();
updateDisplay();
});
});
} catch (error) {
// This will throw the error to the parent window.
throw error;
}
</script>
<style>
/* App CSS Goes Here */
body {
background-color: #f8f9fa;
font-family: 'Roboto', sans-serif;
}
.container {
max-width: 400px;
margin: 0 auto;
padding-top: 20px;
}
.calculator {
background-color: #fff;
border-radius: 10px;
padding: 20px;
box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}
.display {
background-color: #f8f9fa;
border: 1px solid #dee2e6;
border-radius: 5px;
padding: 10px;
text-align: right;
margin-bottom: 10px;
font-size: 24px;
font-weight: bold;
color: #343a40;
}
.buttons {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 10px;
}
.button {
background-color: #6c757d;
color: #fff;
border: none;
border-radius: 5px;
padding: 10px;
text-align: center;
font-size: 18px;
cursor: pointer;
transition: background-color 0.3s ease;
}
.button:hover {
background-color: #495057;
}
.button-lg {
grid-column: span 2;
}
.button-clear {
background-color: #dc3545;
}
.button-clear:hover {
background-color: #c82333;
}
.button-equals {
background-color: #007bff;
}
.button-equals:hover {
background-color: #0069d9;
}
</style>
</head>
<body>
<div id="main-container" class="container">
<div class="calculator">
<div id="display" class="display"></div>
<div class="buttons">
<button class="button number">7</button>
<button class="button number">8</button>
<button class="button number">9</button>
<button class="button operator">/</button>
<button class="button number">4</button>
<button class="button number">5</button>
<button class="button number">6</button>
<button class="button operator">*</button>
<button class="button number">1</button>
<button class="button number">2</button>
<button class="button number">3</button>
<button class="button operator">-</button>
<button class="button-lg button-clear">C</button>
<button class="button number">0</button>
<button class="button operator">.</button>
<button class="button operator">+</button>
<button id="equals" class="button-lg button-equals">=</button>
</div>
</div>
</div>
</body>
</html>
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