Build a Cash Register Project - Build a Cash Register

JavaScript
1

Tell us what’s happening:

I can not pass the 7th test case when price is 3.26 , the value in the #cash element is 100 even if my result is exactly the same. Please help.

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" />
    <link rel="stylesheet" href="style.css" />
    <title>Document</title>
  </head>
  <body>
    <p id="price"></p>
    <input id="cash" type="text" />
    <button id="purchase-btn">purchase</button>
    <div id="change-due"></div>
    <script src="script.js"></script>
  </body>
</html>


/* file: styles.css */


/* file: script.js */
window.addEventListener("load", (e) => {
  const inputCash = document.querySelector("#cash");

  const changeDiv = document.querySelector("#change-due");

  const purchaseBtn = document.querySelector("#purchase-btn");

  purchaseBtn.addEventListener("click", (e) => {
    let cash = inputCash.value;
    let totalLeft = total(cid);
    let change = Math.round((cash - price) * 100) / 100;
    let changeArray = giveChange(change);
    if (cash < price || cash == "") {
      alert("Customer does not have enough money to purchase the item");
    } else if (cash == price) {
      changeDiv.innerHTML = "No change due - customer paid with exact cash";
    } else if (changeArray == false) {
      changeDiv.innerHTML = "Status: INSUFFICIENT_FUNDS";
    } else if (totalLeft == change) {
      changeDiv.innerHTML = `Status: CLOSED  ${format(changeArray)}`;
    } else if (totalLeft > price) {
      changeDiv.innerHTML = `Status: OPEN ${format(changeArray)}`;
    }
  });
});
let price = 3.26;

let values = {
  PENNY: 0.01,
  NICKEL: 0.05,
  DIME: 0.1,
  QUARTER: 0.25,
  ONE: 1,
  FIVE: 5,
  TEN: 10,
  TWENTY: 20,
  "ONE HUNDRED": 100,
};

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]];

let changeCurrency = [
  ["ONEHUNDRED", 0],
  ["TWENTY", 0],
  ["TEN", 0],
  ["FIVE", 0],
  ["ONE", 0],
  ["QUARTER", 0],
  ["DIME", 0],
  ["NICKEL", 0],
  ["PENNY", 0],
];

function roundNum(num) {
  let round = (num.toFixed(3) * 10) / 10;
  return round;
}

function total(pocket) {
  let total = 0;
  for (let i in pocket) {
    total += pocket[i][1];
  }
  return roundNum(total);
}

function giveChange(change) {
  let leftChange = roundNum(change);
  for (let i in cid.reverse()) {
    if (leftChange <= 0) {
      return changeCurrency;
    }
    let value = roundNum(values[cid[i][0]]);
    let have = Math.round(cid[i][1] / value);
    leftChange = Math.round(leftChange * 100) / 100;
    let count = Math.floor(leftChange / value);
    let amount = 0;
    if (count >= have) {
      amount = have;
    } else {
      amount = count;
    }
    if (amount >= 1) {
      cid[i][1] -= amount * value;
      changeCurrency[i][1] += amount * value;
      leftChange -= roundNum(amount * value);
    }
  }
  if (leftChange > 0) {
    return false;
  }
  return changeCurrency;
}

function format(array) {
  if (array == false) {
    return false;
  }
  let message = "";
  for (let i in array) {
    let value = array[i][1];
    if (value != 0) {
      let text = `${array[i][0]}: $${Math.round(value * 100) / 100} `;
      message += text;
    }
  }
  return message;
}

// let cash = 20;
// let change = Math.round((cash - price) * 100) / 100;

// console.log(format(giveChange(change)));

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

The first step would be to figure out what is actually in #change-due for the test you aren’t passing. Have you done that? If so, please paste what you are getting. If not, how do you think you would do that?

3

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