CALCULATOR
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calculator</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #dddddd;
}
.calculator {
width: 300px;
margin: 50px auto;
padding: 20px;
background-color: #35c107;
border: 2px solid #f1eaea;
border-radius: 10px;
box-shadow: 0 0 10px rgba(117 233 79);
}
.display {
width: 95%;
height: 40px;
margin-bottom: 20px;
padding: 10px;
font-size: 24px;
text-align: right;
border: none;
border-radius: 10px;
box-shadow: 0 0 10px rgb(1 10 0 / 50%);
}
.button {
width: 60px;
height: 40px;
margin: 5px;
padding: 10px;
font-size: 18px;
border: none;
border-radius: 10px;
background-color: #000000;
color: #46ff33;
cursor: pointer;
}
.button:hover {
background-color: #3e8e41;
}
</style>
</head>
<body>
<div class="calculator">
<input type="text" id="display" class="display" disabled>
<div>
<button class="button" onclick="clearDisplay()">C</button>
<button class="button" onclick="backspace()">DEL</button>
</div>
<div>
<button class="button" onclick="appendNumber(7)">7</button>
<button class="button" onclick="appendNumber(8)">8</button>
<button class="button" onclick="appendNumber(9)">9</button>
<button class="button" onclick="appendOperator('/')">/</button>
</div>
<div>
<button class="button" onclick="appendNumber(4)">4</button>
<button class="button" onclick="appendNumber(5)">5</button>
<button class="button" onclick="appendNumber(6)">6</button>
<button class="button" onclick="appendOperator('*')">*</button>
</div>
<div>
<button class="button" onclick="appendNumber(1)">1</button>
<button class="button" onclick="appendNumber(2)">2</button>
<button class="button" onclick="appendNumber(3)">3</button>
<button class="button" onclick="appendOperator('-')">-</button>
</div>
<div>
<button class="button" onclick="appendNumber(0)">0</button>
<button class="button" onclick="appendDecimal()">.</button>
<button class="button" onclick="calculate()">=</button>
<button class="button" onclick="appendOperator('+')">+</button>
</div>
</div>
<script>
let display = document.getElementById('display');
let currentNumber = '';
let previousNumber = '';
let operator = '';
function clearDisplay() {
display.value = '';
currentNumber = '';
previousNumber = '';
operator = '';
}
function backspace() {
currentNumber = currentNumber.slice(0, -1);
display.value = currentNumber;
}
function appendNumber(number) {
currentNumber += number;
display.value = currentNumber;
}
function appendDecimal() {
if (!currentNumber.includes('.')) {
currentNumber += '.';
display.value = currentNumber;
}
}
function appendOperator(op) {
previousNumber = currentNumber;
currentNumber = '';
operator = op;
display.value = previousNumber + ' ' + operator;
}
function calculate() {
let result;
switch (operator) {
case '+':
result = parseFloat(previousNumber) + parseFloat(currentNumber);
break;
case '-':
result = parseFloat(previousNumber) - parseFloat(currentNumber);
break;
case '*':
result = parseFloat(previousNumber) * parseFloat(currentNumber);
break;
case '/':
result = parseFloat(previousNumber) / parseFloat(currentNumber);
break;
default:
result = 0;
}
display.value = result;
currentNumber = result.toString();
previousNumber = '';
operator = '';
}
</script>
<center> <a href="index.html" style="color: rgb(0,255,0)"><font color="46ff33">HOME</font></a></center>
<body style="background-color:#000000;">
</body>
</html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calculator</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #dddddd;
}
.calculator {
width: 300px;
margin: 50px auto;
padding: 20px;
background-color: #35c107;
border: 2px solid #f1eaea;
border-radius: 10px;
box-shadow: 0 0 10px rgba(117 233 79);
}
.display {
width: 95%;
height: 40px;
margin-bottom: 20px;
padding: 10px;
font-size: 24px;
text-align: right;
border: none;
border-radius: 10px;
box-shadow: 0 0 10px rgb(1 10 0 / 50%);
}
.button {
width: 60px;
height: 40px;
margin: 5px;
padding: 10px;
font-size: 18px;
border: none;
border-radius: 10px;
background-color: #000000;
color: #46ff33;
cursor: pointer;
}
.button:hover {
background-color: #3e8e41;
}
</style>
</head>
<body>
<div class="calculator">
<input type="text" id="display" class="display" disabled>
<div>
<button class="button" onclick="clearDisplay()">C</button>
<button class="button" onclick="backspace()">DEL</button>
</div>
<div>
<button class="button" onclick="appendNumber(7)">7</button>
<button class="button" onclick="appendNumber(8)">8</button>
<button class="button" onclick="appendNumber(9)">9</button>
<button class="button" onclick="appendOperator('/')">/</button>
</div>
<div>
<button class="button" onclick="appendNumber(4)">4</button>
<button class="button" onclick="appendNumber(5)">5</button>
<button class="button" onclick="appendNumber(6)">6</button>
<button class="button" onclick="appendOperator('*')">*</button>
</div>
<div>
<button class="button" onclick="appendNumber(1)">1</button>
<button class="button" onclick="appendNumber(2)">2</button>
<button class="button" onclick="appendNumber(3)">3</button>
<button class="button" onclick="appendOperator('-')">-</button>
</div>
<div>
<button class="button" onclick="appendNumber(0)">0</button>
<button class="button" onclick="appendDecimal()">.</button>
<button class="button" onclick="calculate()">=</button>
<button class="button" onclick="appendOperator('+')">+</button>
</div>
</div>
<script>
let display = document.getElementById('display');
let currentNumber = '';
let previousNumber = '';
let operator = '';
function clearDisplay() {
display.value = '';
currentNumber = '';
previousNumber = '';
operator = '';
}
function backspace() {
currentNumber = currentNumber.slice(0, -1);
display.value = currentNumber;
}
function appendNumber(number) {
currentNumber += number;
display.value = currentNumber;
}
function appendDecimal() {
if (!currentNumber.includes('.')) {
currentNumber += '.';
display.value = currentNumber;
}
}
function appendOperator(op) {
previousNumber = currentNumber;
currentNumber = '';
operator = op;
display.value = previousNumber + ' ' + operator;
}
function calculate() {
let result;
switch (operator) {
case '+':
result = parseFloat(previousNumber) + parseFloat(currentNumber);
break;
case '-':
result = parseFloat(previousNumber) - parseFloat(currentNumber);
break;
case '*':
result = parseFloat(previousNumber) * parseFloat(currentNumber);
break;
case '/':
result = parseFloat(previousNumber) / parseFloat(currentNumber);
break;
default:
result = 0;
}
display.value = result;
currentNumber = result.toString();
previousNumber = '';
operator = '';
}
</script>
<center> <a href="index.html" style="color: rgb(0,255,0)"><font color="46ff33">HOME</font></a></center>
<body style="background-color:#000000;">
</body>
</html>