To design a web application for a standard calculator with minimum five operations.
Clone the github repository and create Django admin interface.
Change settings.py file to allow request from all hosts.
Use CSS for creating attractive colors.
Write JavaScript program for implementing five different operations.
Validate the HTML and CSS code.
Publish the website in the given URL.
<html>
<head>
<title>Simple Calculator</title>
<style>
body {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
}
#calculator-container {
background-color: #f0f0f0;
padding: 20px;
border-radius: 10px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}
input[type="text"] {
width: 100%;
padding: 10px;
margin: 5px 0;
color: black;
}
table {
margin-top: 10px;
}
button {
padding: 10px 20px;
font-size: 20px;
}
/* Define colors for operators */
button[data-operator="+"] {
background-color: #ff9900;
}
button[data-operator="-"] {
background-color: #ff3333;
}
button[data-operator="*"] {
background-color: #33cc33;
}
button[data-operator="/"] {
background-color: #3399ff;
}
button[data-operator="%"] {
background-color: #9900cc;
}
button[data-operator="sqrt"] {
background-color: #9900cc;
}
</style>
</head>
<body>
<div id="calculator-container">
<h1>Calculator</h1>
<input type="text" id="display" readonly>
<table>
<tr>
<td><button onclick="appendToDisplay('1')">1</button></td>
<td><button onclick="appendToDisplay('2')">2</button></td>
<td><button onclick="appendToDisplay('3')">3</button></td>
<td><button data-operator="+" onclick="appendToDisplay('+')" style="color: white;">+</button></td>
</tr>
<tr>
<td><button onclick="appendToDisplay('4')">4</button></td>
<td><button onclick="appendToDisplay('5')">5</button></td>
<td><button onclick="appendToDisplay('6')">6</button></td>
<td><button data-operator="-" onclick="appendToDisplay('-')" style="color: white;">-</button></td>
</tr>
<tr>
<td><button onclick="appendToDisplay('7')">7</button></td>
<td><button onclick="appendToDisplay('8')">8</button></td>
<td><button onclick="appendToDisplay('9')">9</button></td>
<td><button data-operator="*" onclick="appendToDisplay('*')" style="color: white;">*</button></td>
</tr>
<tr>
<td><button onclick="appendToDisplay('0')">0</button></td>
<td><button data-operator="%" onclick="appendToDisplay('%')">%</button></td>
<td><button data-operator="sqrt" onclick="calculateSquareRoot()">√</button></td>
<td><button data-operator="/" onclick="appendToDisplay('/')" style="color: white;">/</button></td>
</tr>
<tr>
<td colspan="3"><button onclick="clearDisplay()">C</button></td>
<td><button onclick="calculateResult()">=</button></td>
</tr>
</table>
</div>
<script>
function appendToDisplay(value) {
document.getElementById('display').value += value;
}
function clearDisplay() {
document.getElementById('display').value = '';
}
function calculateResult() {
try {
document.getElementById('display').value = eval(document.getElementById('display').value);
} catch (error) {
document.getElementById('display').value = 'Error';
}
}
function calculateSquareRoot() {
const inputValue = document.getElementById('display').value;
const result = Math.sqrt(parseFloat(inputValue));
document.getElementById('display').value = result;
}
</script>
</body>
</html>
The program for designing a standard calculator using HTML and CSS is executed successfully.
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