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Author SHA1 Message Date
Marius Cerchez 97c6c6575b Update repo 2026-02-09 12:54:08 +00:00
4 changed files with 0 additions and 192 deletions
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-41
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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" />
<link
href="https://fonts.googleapis.com/css2?family=Roboto+Mono&display=swap"
rel="stylesheet"
/>
<link rel="stylesheet" href="style.css" />
<title>Calculator</title>
</head>
<body>
<div class="calculator">
<input type="text" id="display" disabled />
<button class="clear">C</button>
<button class="backspace"></button>
<button class="operator">÷</button>
<button class="number">7</button>
<button class="number">8</button>
<button class="number">9</button>
<button class="operator">×</button>
<button class="number">4</button>
<button class="number">5</button>
<button class="number">6</button>
<button class="operator">-</button>
<button class="number">1</button>
<button class="number">2</button>
<button class="number">3</button>
<button class="operator">+</button>
<button class="large number">0</button>
<button class="result">=</button>
</div>
<script src="./script.js"></script>
</body>
</html>
-92
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const display = document.querySelector("#display");
let previousNumber = 0;
let lastOperation = "";
function doOperation(operation, numA, numB) {
numA = Number(numA);
numB = Number(numB);
switch (operation) {
case "+":
return numA + numB;
break;
case "÷":
return numA / numB;
break;
case "×":
return numA * numB;
break;
case "-":
return numA - numB;
break;
}
}
//Set numbers logic
const numbers = document.querySelectorAll(".number");
numbers.forEach((number) => {
number.addEventListener("click", (event) => {
updateDisplay(event.target.innerText);
});
});
function updateDisplay(number) {
let currentResult = display.value;
if (currentResult === "0") {
display.value = number;
} else {
display.value += number;
}
}
function reset() {
display.value = "0";
previousNumber = "0";
lastOperation = "";
}
// Set clear button
const clearButton = document.querySelector(".clear");
clearButton.addEventListener("click", () => {
reset();
});
// Set backspace button
backspaceButton = document.querySelector(".backspace");
backspaceButton.addEventListener("click", () => {
let result = display.value;
result = result.slice(0, -1);
if (result.length === 0) {
result = "0";
}
display.value = result;
});
// Operations
const operators = document.querySelectorAll(".operator");
operators.forEach((operator) => {
operator.addEventListener("click", (event) => {
if (lastOperation) {
previousNumber = doOperation(
lastOperation,
previousNumber,
display.value,
);
} else {
previousNumber = Number(display.value);
}
display.value = "0";
lastOperation = event.target.innerText;
});
});
// Result button
const resultButton = document.querySelector(".result");
resultButton.addEventListener("click", (event) => {
if (lastOperation) {
display.value = doOperation(lastOperation, previousNumber, display.value);
}
});
reset();
-59
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body {
font-family: "Roboto Mono", monospace;
font-optical-sizing: auto;
font-weight: 400;
font-style: normal;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
}
.calculator {
display: grid;
grid-template-columns: 1fr 1fr 1fr 1fr;
border-collapse: collapse;
border-radius: 0;
}
#display {
grid-column: 1 / 5;
height: 100px;
width: 400px;
background-color: black;
color: white;
text-align: right;
font-size: 75px;
}
button {
height: 100px;
font-size: 50px;
background-color: #d8d9db;
border: 1px solid black;
padding: 0;
}
button:hover {
background-color: #ebebeb;
}
.operator {
background-color: #df974c;
color: white;
}
.operator:hover {
background-color: #dfb07e;
}
.clear {
grid-column: 1 / 3;
}
.large {
grid-column: 1 / 4;
}