Build a Cash Register Project - Build a Cash Register

JavaScript
1

Tell us what’s happening:

I’ve gotten my code to the point where it passes all tests except the last one.

" When price is 19.5, the value in the #cash element is 20, cid is [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]], and the #purchase-btn element is clicked, the value in the #change-due element should be "Status: CLOSED PENNY: $0.5""

I’ve been at it for hours and can’t seem to figure out what’s wrong.

Your code so far

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// freeCodeCamp provided variables
let price = 19.5;
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],
];

// Declare Global Variables
const cash = document.getElementById("cash");
const changeDue = document.getElementById("change-due");
const purchaseBtn = document.getElementById("purchase-btn");

// Results Function
const changeDueResults = () => {
  checkRegister();
};

// Button event listener
purchaseBtn.addEventListener("click", changeDueResults);

// Function to round to nearest two decimal places
function roundToTwoDecimalPlaces(num) {
  return Math.round(num * 100) / 100;
}

// Check Register Function
const checkRegister = () => {
  let changeDueValue = parseFloat(cash.value) - price;
  let higherDenomFirst = cid.slice().reverse();
  let currencyUnits = [100, 20, 10, 5, 1, 0.25, 0.1, 0.05, 0.01];
  let status = { status: "OPEN", change: [] };
  let totalCurrency = 0;

  for (const total of cid) {
    totalCurrency += total[1];
  }

  if (parseFloat(cash.value) < price) {
    alert("Customer does not have enough money to purchase the item");
    cash.value = "";
    return;
  }

  if (parseFloat(cash.value) === price) {
    changeDue.innerHTML = `<p>No change due - customer paid with exact cash</p>`;
    cash.value = "";
    return;
  }

  if (totalCurrency < changeDueValue) {
    changeDue.innerHTML = "<p>Status: INSUFFICIENT_FUNDS</p>";
    return;
  }

  let i = 0;
  outerLoop: while (i < higherDenomFirst.length) {
    let count = 0;
    let total = higherDenomFirst[i][1];

    while (total > 0 && changeDueValue >= currencyUnits[i]) {
      total -= currencyUnits[i];
      changeDueValue = roundToTwoDecimalPlaces(
        changeDueValue - currencyUnits[i],
      );
      count++;
    }

    const changeAmount = count * currencyUnits[i];
    if (changeAmount <= higherDenomFirst[i][1]) {
      status.change.push([higherDenomFirst[i][0], changeAmount]);
    } else {
      // Adjust changeDueValue and retry with the next denomination
      changeDueValue = roundToTwoDecimalPlaces(changeDueValue + changeAmount);
      i++;
      continue outerLoop;
    }

    i++;
  }

  if (changeDueValue > 0) {
    // Check if remaining change can be handled with PENNY
    if (changeDueValue <= cid[0][1]) {
      // Display as CLOSED
      changeDue.innerHTML = `<p>Status: CLOSED PENNY: $${changeDueValue.toFixed(2)}</p>`;
    } else {
      // Display as INSUFFICIENT_FUNDS
      changeDue.innerHTML = "<p>Status: INSUFFICIENT_FUNDS</p>";
    }
    return;
  }

  // Display the result
  const formattedChange = status.change
    .filter(([_, amount]) => amount > 0)
    .map(formatCurrency)
    .join(" ");

  if (formattedChange.trim() === "" && changeDueValue === 0) {
    // Use toFixed(2) to ensure proper rounding
    changeDue.innerHTML = `<p>Status: CLOSED PENNY: $${changeDueValue.toFixed(2)}</p>`;
  } else {
    changeDue.innerHTML = `<p>Status: OPEN ${formattedChange}</p>`;
  }
};

// Format currency function
function formatCurrency(money) {
  return money[1] > 0 ? `${money[0]}: $${money[1]} ` : "";
}

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Challenge Information:

Build a Cash Register Project - Build a Cash Register

2

what is your html? that is also needed for debugging

3

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