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Add files via upload #48

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a14b97e
Add files via upload
Samar1110 Jun 9, 2022
088f42f
Update index.html
Samar1110 Jul 4, 2022
6060a19
Delete style.css
Samar1110 Jul 4, 2022
21bc762
Delete storingData.js
Samar1110 Jul 4, 2022
64a75dc
Delete script.js
Samar1110 Jul 4, 2022
89ad2f7
Add files via upload
Samar1110 Jul 4, 2022
41aa390
Update index.css
Samar1110 Jul 4, 2022
bd5e0f2
Update index.html
Samar1110 Jul 4, 2022
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97 changes: 97 additions & 0 deletions index.html
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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>Web Calculator</title>
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Fira+Sans:wght@300&family=Merriweather+Sans&family=Roboto+Slab&display=swap" rel="stylesheet">
<link rel="stylesheet" href="/style.css">
</head>

<body>
<div>
<p class="heading">Calculator</p>
</div>
<div class="flex-container-column card">
<div class="display">
<h1 id="displayNumber">
0
</h1>
</div>
<div class="flex-container-row">
<div class="button operator" style="font-family: 'Roboto Slab', serif;">sin^-1</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">cos^-1</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">tan^-1</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">e</div>
</div>
<div class="flex-container-row">
<div class="button operator" style="font-family: 'Roboto Slab', serif;">|x|</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">x^2</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">sqrt</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">/</div>
</div>
<div class="flex-container-row">
<div class="button operator" style="font-family: 'Roboto Slab', serif;">ln</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">log</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">1/x</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">*</div>
</div>
<div class="flex-container-row">
<div class="button operator" style="font-family: 'Roboto Slab', serif;">sin</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">cos</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">tan</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">^</div>
</div>
<div class="flex-container-row">
<div class="button" style="font-family: 'Roboto Slab', serif;">7</div>
<div class="button" style="font-family: 'Roboto Slab', serif;">8</div>
<div class="button" style="font-family: 'Roboto Slab', serif;">9</div>
<div class="button negative" style="font-family: 'Roboto Slab', serif;">+/-</div>
</div>
<div class="flex-container-row">
<div class="button" style="font-family: 'Roboto Slab', serif;">4</div>
<div class="button" style="font-family: 'Roboto Slab', serif;">5</div>
<div class="button" style="font-family: 'Roboto Slab', serif;">6</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">-</div>
</div>
<div class="flex-container-row">
<div class="button" style="font-family: 'Roboto Slab', serif;">1</div>
<div class="button" style="font-family: 'Roboto Slab', serif;">2</div>
<div class="button" style="font-family: 'Roboto Slab', serif;">3</div>
<div class="button operator" style="font-family: 'Roboto Slab', serif;">+</div>
</div>
<div class="flex-container-row">
<div class="button clear" style="font-family: 'Roboto Slab', serif;">AC</div>
<div class="button" style="font-family: 'Roboto Slab', serif;">0</div>
<div class="button" style="font-family: 'Roboto Slab', serif;">.</div>
<div class="button equals" style="font-family: 'Roboto Slab', serif;">=</div>
</div>
</div>

<div class="history card">
<h2>History</h2>
<table>
<thead>
<tr>
<th style="font-family: 'Roboto Slab', serif;">First Num</th>
<th style="font-family: 'Roboto Slab', serif;">Operator</th>
<th style="font-family: 'Roboto Slab', serif;">Second Num</th>
<th style="font-family: 'Roboto Slab', serif;">Result</th>
</tr>
</thead>
<tbody id="historyList"></tbody>
</table>
</div>

<div>
<p class="center" style="margin-top: 50px;">Copyright 2022 Phantom</p>
</div>

<script src="storingData.js"></script>
<script src="script.js"></script>
</body>

</html>
158 changes: 158 additions & 0 deletions script.js
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const calculator = {
displayNumber: '0',
operator: null,
firstNumber: null,
waitingForSecondNumber: false
};

function updateDisplay() {
document.querySelector("#displayNumber").innerText = calculator.displayNumber;
}

function clearCalculator() {
calculator.displayNumber = '0';
calculator.operator = null;
calculator.firstNumber = null;
calculator.waitingForSecondNumber = false;
}

function inputDigit(digit) {
if (calculator.waitingForSecondNumber && calculator.firstNumber === calculator.displayNumber) {
calculator.displayNumber = digit;
} else {
if (calculator.displayNumber === '0') {
calculator.displayNumber = digit;
} else {
calculator.displayNumber += digit;
}
}
}

function inverseNumber() {
if (calculator.displayNumber === '0') {
return;
}
calculator.displayNumber = calculator.displayNumber * -1;
}

function handleOperator(operator) {
if (!calculator.waitingForSecondNumber) {
calculator.operator = operator;
calculator.waitingForSecondNumber = true;
calculator.firstNumber = calculator.displayNumber;
} else {
alert('Enter 2nd number first')
}
}

function performCalculation() {
if (calculator.firstNumber == null || calculator.operator == null) {
alert("Enter a number first");
return;
}

let result = 0;
if (calculator.operator === "+") {
result = parseFloat(calculator.firstNumber) + parseFloat(calculator.displayNumber);
}
if (calculator.operator === "-") {
result = parseFloat(calculator.firstNumber) - parseFloat(calculator.displayNumber)
}
if (calculator.operator === "*") {
result = parseFloat(calculator.firstNumber) * parseFloat(calculator.displayNumber)
}
if (calculator.operator === "/") {
result = parseFloat(calculator.firstNumber) / parseFloat(calculator.displayNumber)
}
if (calculator.operator === "1/x") {
result = 1/parseFloat(calculator.firstNumber)
}
if (calculator.operator === "sin") {
result = Math.sin(parseFloat(calculator.firstNumber))
}
if (calculator.operator === "cos") {
result = Math.cos(parseFloat(calculator.firstNumber))
}
if (calculator.operator === "tan") {
result = Math.tan(parseFloat(calculator.firstNumber))
}
if (calculator.operator === "log") {
result = Math.log10(parseFloat(calculator.firstNumber))
}
if (calculator.operator === "ln") {
result = Math.log(parseFloat(calculator.firstNumber))
}
if (calculator.operator === "^") {
result = Math.pow(parseFloat(calculator.firstNumber),parseFloat(calculator.displayNumber) )
}
if (calculator.operator === "sqrt") {
result = Math.sqrt(parseFloat(calculator.firstNumber))
}
if (calculator.operator == "x^2") {
result = Math.pow(parseFloat(calculator.firstNumber),2)
}
if (calculator.operator == "|x|") {
result = Math.abs(parseFloat(calculator.firstNumber))
}
if (calculator.operator == "sin^-1") {
result = Math.asin(parseFloat(calculator.firstNumber))
}
if (calculator.operator == "cos^-1") {
result = Math.acos(parseFloat(calculator.firstNumber))
}
if (calculator.operator == "tan^-1") {
result = Math.atan(parseFloat(calculator.firstNumber))
}
if (calculator.operator == "e") {
result = Math.exp(parseFloat(calculator.firstNumber))
}
// if()


// objek yang akan dikirimkan sebagai argumen fungsi putHistory()
const history = {
firstNumber: calculator.firstNumber,
secondNumber: calculator.displayNumber,
operator: calculator.operator,
result: result
}
putHistory(history);
calculator.displayNumber = result;
renderHistory();
}

const buttons = document.querySelectorAll(".button");
for (let button of buttons) {
button.addEventListener('click', function (event) {

// mendapatkan objek elemen yang diklik
const target = event.target;

if (target.classList.contains('clear')) {
clearCalculator();
updateDisplay();
return;
}

if (target.classList.contains('negative')) {
inverseNumber();
updateDisplay();
return;
}

if (target.classList.contains('equals')) {
performCalculation();
updateDisplay();
return;
}

if (target.classList.contains('operator')) {
handleOperator(target.innerText)
updateDisplay();
return;
}

inputDigit(target.innerText);
updateDisplay()
});
}
82 changes: 82 additions & 0 deletions storingData.js
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const CACHE_KEY = "calculation_history";

function checkForStorage() {
return typeof (Storage) !== "undefined";
}

function putHistory(data) {
if (checkForStorage()) {
let historyData = null;
if (localStorage.getItem(CACHE_KEY) === null) {
historyData = [];
} else {
historyData = JSON.parse(localStorage.getItem(CACHE_KEY));
}

historyData.unshift(data);

if (historyData.length > 5) {
historyData.pop();
}

localStorage.setItem(CACHE_KEY, JSON.stringify(historyData));
}
}

function showHistory() {
if (checkForStorage) {
return JSON.parse(localStorage.getItem(CACHE_KEY)) || [];
} else {
return [];
}
}

function renderHistory() {
const historyData = showHistory();
let historyList = document.querySelector("#historyList");
historyList.innerHTML = "";

for (let history of historyData) {
let row = document.createElement('tr');
row.innerHTML = "<td>" + history.firstNumber + "</td>";
row.innerHTML += "<td>" + history.operator + "</td>";
row.innerHTML += "<td>" + history.secondNumber + "</td>";
row.innerHTML += "<td>" + history.result + "</td>";

historyList.appendChild(row);
}
}

renderHistory();

const history = {
firstNumber: calculator.firstNumber,
secondNumber: calculator.displayNumber,
operator: calculator.operator,
result: result
}

function performCalculation() {
if (calculator.firstNumber == null || calculator.operator == null) {
alert("Anda belum menetapkan operator");
return;
}

let result = 0;
if (calculator.operator === "+") {
result = parseInt(calculator.firstNumber) + parseInt(calculator.displayNumber);
} else {
result = parseInt(calculator.firstNumber) - parseInt(calculator.displayNumber)
}

// objek yang akan dikirimkan sebagai argumen fungsi putHistory()
const history = {
firstNumber: calculator.firstNumber,
secondNumber: calculator.displayNumber,
operator: calculator.operator,
result: result
}
putHistory(history);
calculator.displayNumber = result;
renderHistory();
}
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