Tell us what’s happening:
Why i didn’t passed the last two instructions : I tried so many times but still not pass the code why?
Your code so far
<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Cash Register</title>
<link rel="stylesheet" href="styles.css">
</head>
<body>
<h1>Cash Register</h1>
<label for="price">Price:</label>
<input type="number" id="price" value="1.87" step="0.01"><br>
<label for="cash">Cash Provided:</label>
<input type="number" id="cash" step="0.01"><br>
<button id="purchase-btn">Purchase</button>
<p id="change-due"></p>
<script src="script.js"></script>
</body>
</html>
/* file: script.js */
// Initial values
let price = 1.87;
let cid = [
['PENNY', 1.01],
['NICKEL', 2.05],
['DIME', 3.1],
['QUARTER', 4.25],
['ONE', 90],
['FIVE', 55],
['TEN', 20],
['TWENTY', 60],
['ONE HUNDRED', 100]
];
// Add event listener to the purchase button
document.getElementById('purchase-btn').addEventListener('click', () => {
let cash = parseFloat(document.getElementById('cash').value);
let changeDue = cash - price;
let result = { status: '', change: [] };
if (cash < price) {
alert('Customer does not have enough money to purchase the item');
return;
}
if (cash === price) {
document.getElementById('change-due').innerText = 'No change due - customer paid with exact cash';
return;
}
// Determine if we have enough funds to give the correct change
const totalCid = getTotalCid(cid);
if (changeDue > totalCid) {
result.status = 'INSUFFICIENT_FUNDS';
} else {
const change = getChange(changeDue, cid);
if (change === null) {
result.status = 'INSUFFICIENT_FUNDS';
} else if (changeDue === totalCid) {
result.status = 'CLOSED';
result.change = cid;
} else {
result.status = 'OPEN';
result.change = change;
}
}
displayResult(result);
});
// Function to calculate the total cash in the drawer
function getTotalCid(cid) {
return cid.reduce((total, [_, amount]) => total + amount, 0).toFixed(2);
}
// Function to calculate the change to be returned
function getChange(changeDue, cid) {
let change = [];
let remainingChange = changeDue;
// Copy the cid array to avoid mutating the original array
let cidCopy = cid.map(([name, amount]) => [name, amount]);
const denominations = [
['ONE HUNDRED', 100],
['TWENTY', 20],
['TEN', 10],
['FIVE', 5],
['ONE', 1],
['QUARTER', 0.25],
['DIME', 0.1],
['NICKEL', 0.05],
['PENNY', 0.01]
];
for (let [name, value] of denominations) {
let amount = 0;
while (remainingChange >= value && cidCopy.find(([denom]) => denom === name)[1] > 0) {
remainingChange -= value;
remainingChange = Math.round(remainingChange * 100) / 100; // Avoid floating point precision issues
cidCopy.find(([denom]) => denom === name)[1] -= value;
amount += value;
}
if (amount > 0) {
change.push([name, amount]);
}
}
// If we could not give the exact change
if (remainingChange > 0) {
return null;
}
// Check if the change matches exactly with the cid
if (changeDue === getTotalCid(cid)) {
return cid; // The drawer is exactly closed
}
return change;
}
// Function to display the result
function displayResult(result) {
let changeDueElement = document.getElementById('change-due');
if (result.status === 'INSUFFICIENT_FUNDS') {
changeDueElement.innerText = 'Status: INSUFFICIENT_FUNDS';
} else if (result.status === 'CLOSED') {
changeDueElement.innerText = `Status: CLOSED ${result.change.map(([name, amount]) => `${name}: $${amount.toFixed(2)}`).join(' ')}`;
} else {
changeDueElement.innerText = `Status: OPEN ${result.change.map(([name, amount]) => `${name}: $${amount.toFixed(2)}`).join(' ')}`;
}
}
/* file: styles.css */
body {
font-family: Arial, sans-serif;
margin: 20px;
}
h1 {
font-size: 24px;
}
label {
display: block;
margin-top: 10px;
}
input {
margin-bottom: 10px;
}
button {
margin-top: 10px;
padding: 10px 20px;
font-size: 16px;
}
#change-due {
margin-top: 20px;
font-weight: bold;
}
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36
Challenge Information:
Build a Cash Register Project - Build a Cash Register
