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apps/calculator/index.html
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@ -5,154 +5,161 @@
<meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>MilkNet | Calculator</title> <title>MilkNet | Calculator</title>
<style> <style>
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&display=swap');
body { body {
font-family: 'DM Sans', sans-serif; font-family: 'Arial', sans-serif;
display: flex; display: flex;
justify-content: center; justify-content: center;
align-items: center; align-items: center;
height: 100vh; height: 100vh;
background-color: #000; margin: 0;
background-color: #000; /* Dark background */
color: white; /* White text */
} }
.calculator { .calculator {
background: #111; background-color: #000; /* Dark calculator background */
color: #fff;
padding: 20px; padding: 20px;
border-radius: 15px; border-radius: 15px;
box-shadow: 0px 4px 15px rgba(255, 255, 255, 0.2); box-shadow: 0 4px 10px rgba(0, 0, 0, 0.6);
text-align: center; width: 280px;
} }
input { input {
width: 100%; width: 100%;
height: 60px; height: 50px;
text-align: center; font-size: 24px;
font-size: 2em;
margin-bottom: 15px;
background: #222;
color: #fff;
border: none;
padding: 10px; padding: 10px;
margin-bottom: 20px;
background-color: #000;
color: white;
border: none;
border-radius: 8px; border-radius: 8px;
text-align: center;
} }
.buttons { .buttons {
display: grid; display: grid;
grid-template-columns: repeat(5, 1fr); grid-template-columns: repeat(4, 1fr);
gap: 10px; gap: 10px;
} }
button { button {
padding: 20px; padding: 20px;
font-size: 1.3em; font-size: 18px;
font-weight: 500;
border: none; border: none;
background: #333; background-color: #444; /* Dark buttons */
color: #fff; color: white;
cursor: pointer;
border-radius: 8px; border-radius: 8px;
transition: background 0.3s ease; cursor: pointer;
transition: background-color 0.3s, transform 0.1s;
} }
button:hover { button:hover {
background: #555; background-color: #555;
}
button:active {
background-color: #666;
transform: scale(0.98);
}
button:focus {
outline: none;
}
.button-clear {
background-color: #e63946;
}
.button-equal {
background-color: #2a9d8f;
grid-column: span 4;
}
.button-function {
background-color: #f1faee;
color: #333;
} }
</style> </style>
</head> </head>
<body> <body>
<div class="calculator"> <div class="calculator">
<input type="text" id="display" disabled> <input type="text" id="display" disabled>
<div class="buttons"> <div class="buttons">
<button onclick="clearDisplay()">C</button> <button class="button-clear" onclick="clearDisplay()">C</button>
<button onclick="appendToDisplay('(')">(</button> <button onclick="deleteLast()">←</button>
<button onclick="appendToDisplay(')')">)</button> <button class="button-function" onclick="appendToDisplay('%')">%</button>
<button onclick="appendToDisplay(' / ')">/</button> <button class="button-function" onclick="appendToDisplay('/')">/</button>
<button onclick="appendToDisplay(' * ')">*</button>
<button onclick="appendToDisplay('7')">7</button> <button onclick="appendToDisplay('7')">7</button>
<button onclick="appendToDisplay('8')">8</button> <button onclick="appendToDisplay('8')">8</button>
<button onclick="appendToDisplay('9')">9</button> <button onclick="appendToDisplay('9')">9</button>
<button onclick="appendToDisplay(' - ')">-</button> <button class="button-function" onclick="appendToDisplay('*')">*</button>
<button onclick="appendToDisplay(' + ')">+</button>
<button onclick="appendToDisplay('4')">4</button> <button onclick="appendToDisplay('4')">4</button>
<button onclick="appendToDisplay('5')">5</button> <button onclick="appendToDisplay('5')">5</button>
<button onclick="appendToDisplay('6')">6</button> <button onclick="appendToDisplay('6')">6</button>
<button onclick="appendToDisplay('%')">%</button> <button class="button-function" onclick="appendToDisplay('-')">-</button>
<button onclick="appendToDisplay('1')">1</button> <button onclick="appendToDisplay('1')">1</button>
<button onclick="appendToDisplay('2')">2</button> <button onclick="appendToDisplay('2')">2</button>
<button onclick="appendToDisplay('3')">3</button> <button onclick="appendToDisplay('3')">3</button>
<button class="button-function" onclick="appendToDisplay('+')">+</button>
<button onclick="appendToDisplay('0')">0</button> <button onclick="appendToDisplay('0')">0</button>
<button onclick="appendToDisplay('.')">.</button> <button onclick="appendToDisplay('.')">.</button>
<button onclick="appendToDisplay('sin(')">sin</button> <button class="button-function" onclick="appendToDisplay('**')">^</button>
<button onclick="appendToDisplay('cos(')">cos</button>
<button onclick="appendToDisplay('tan(')">tan</button> <button class="button-function" onclick="appendToDisplay('sin(')">sin</button>
<button onclick="appendToDisplay('log(')">log</button> <button class="button-function" onclick="appendToDisplay('cos(')">cos</button>
<button onclick="appendToDisplay('√(')">√</button> <button class="button-function" onclick="appendToDisplay('tan(')">tan</button>
<button onclick="appendToDisplay('^')">x^y</button>
<button onclick="appendToDisplay('π')">π</button>
<button onclick="appendToDisplay('e')">e</button> <button class="button-function" onclick="appendToDisplay('(')">(</button>
<button onclick="appendToDisplay('!')">x!</button> <button class="button-function" onclick="appendToDisplay(')')">)</button>
<button onclick="calculateResult()">=</button>
<button class="button-equal" onclick="calculate()">=</button>
</div> </div>
</div> </div>
<script> <script>
function appendToDisplay(value) {
// Add spaces around operators
if (['+', '-', '*', '/', '%', '^'].includes(value)) {
// Check if there's already a space before or after the operator
let display = document.getElementById('display').value;
if (display && display.slice(-1) !== ' ' && !['+', '-', '*', '/', '%', '^'].includes(display.slice(-1))) {
document.getElementById('display').value += ' ' + value + ' ';
} else if (display === '') {
document.getElementById('display').value += ' ' + value + ' ';
} else {
document.getElementById('display').value += value;
}
} else {
document.getElementById('display').value += value;
}
}
function clearDisplay() { function clearDisplay() {
document.getElementById('display').value = ''; document.getElementById('display').value = '';
} }
function calculateResult() {
function deleteLast() {
let display = document.getElementById('display');
display.value = display.value.slice(0, -1);
}
function appendToDisplay(value) {
let display = document.getElementById('display');
display.value += value;
}
function calculate() {
let display = document.getElementById('display');
try { try {
let expression = document.getElementById('display').value; display.value = eval(display.value.replace(/sin\(/g, 'Math.sin(').replace(/cos\(/g, 'Math.cos(').replace(/tan\(/g, 'Math.tan('));
expression = expression.replace(/factorial\((\d+)\)/g, (match, num) => factorial(parseInt(num)));
document.getElementById('display').value = eval(expression);
} catch (e) { } catch (e) {
alert('Invalid Expression'); display.value = 'Error';
} }
} }
function factorial(n) {
if (n === 0 || n === 1) return 1;
let result = 1;
for (let i = 2; i <= n; i++) {
result *= i;
}
return result;
}
// Add event listener for keyboard input
document.addEventListener('keydown', function(event) {
const key = event.key;
// Handle digit keys and operators document.addEventListener('keydown', function (e) {
if ((key >= '0' && key <= '9') || key === '.' || key === '+' || key === '-' || key === '*' || key === '/' || key === '%' || key === '^') { const validKeys = [
appendToDisplay(key); '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'.', '/', '*', '-', '+', '=', 'Enter', 'Backspace', 'c',
'(', ')', '%', '^'
];
if (validKeys.includes(e.key)) {
if (e.key === 'Enter' || e.key === '=') {
calculate();
} else if (e.key === 'Backspace') {
deleteLast();
} else if (e.key === 'c' || e.key === 'c') {
clearDisplay();
} else {
appendToDisplay(e.key);
} }
// Handle special characters and functions
else if (key === '(') {
appendToDisplay('(');
} else if (key === ')') {
appendToDisplay(')');
} else if (key === 'Enter') {
calculateResult();
} else if (key === 'Backspace') {
backspace();
} }
}); });
// Function for handling Backspace
function backspace() {
let display = document.getElementById('display').value;
document.getElementById('display').value = display.slice(0, -1);
}
</script> </script>
</body> </body>
</html> </html>