81 lines
2.7 KiB
JavaScript
81 lines
2.7 KiB
JavaScript
const tip10per = '10';
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const tip15per = '15';
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const tip20per = '20';
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// Function to create the original tip percent.
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function tipCalculator(billTotal, selectedPer) {
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if (selectedPer === tip10per) {
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return billTotal * .10;
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}
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else if (selectedPer === tip15per) {
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return billTotal * .15;
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}
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else if (selectedPer === tip20per) {
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return billTotal * .20;
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}
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throw new Error('tip not selected')
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}
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function totalAmount(billTotal, selectedPer, numPpl) {
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//Gets the selected percent that you want to leave for a tip from the bill total enterd and adds them together.
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let tipAmount = tipCalculator(billTotal, selectedPer);
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let totalAmount = tipAmount + billTotal;
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//Does the OCD calculations by rounding the total bill amount up to make a whole number. Then taking that number and subtracting it from the total bill, which gives you a new tip amount that makes the bill total to be a whole number.
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let ocdTotalAmount = Math.ceil(totalAmount);
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let newTip = new Number((ocdTotalAmount - billTotal).toFixed(2));
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let billInfo = {
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prevBillTotal: billTotal,
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tipAmount: newTip,
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newAmount: ocdTotalAmount
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}
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//Sends the above content to the splitBill function if more than one person was selected.
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if (numPpl > 1) {
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return splitBill(billInfo, numPpl);
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}
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else {
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return billInfo;
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}
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}
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function splitBill(splitTotal, numPpl) {
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//Dividing the tip and bill between selected number of people.
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let billPerPerson = splitTotal.prevBillTotal / numPpl;
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let tipPerPerson = splitTotal.tipAmount / numPpl;
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//Rounding bill to nearest 100 to make sure we get back a number that can be made from change.
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tipPerPerson = Math.round(100 * tipPerPerson) / 100;
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return {
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prevBillTotal: splitTotal.prevBillTotal,
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newAmount: billPerPerson,
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tipAmount: tipPerPerson,
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}
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}
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//Get the bill that is entered.
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function getTotalbill() {
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return parseFloat(document.getElementById('totalBillInput').value);
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}
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//Get the number of people entered.
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function getNumPpl() {
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return parseInt(document.getElementById('numPplInput').value);
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}
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// Get the tip perect that was selected.
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function handlePercentClick(tipPercent) {
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let billTotal = getTotalbill();
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let numPpl = getNumPpl();
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if (billTotal <= 0) {
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return alert('Fill in all boxes please!')
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}
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else {
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//Displays to the UI
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let finBillTotal = totalAmount(billTotal, tipPercent, numPpl);
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document.getElementById('ocdBill').textContent = finBillTotal.newAmount;
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document.getElementById("ocdtTipAmount").textContent = finBillTotal.tipAmount;
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}
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}
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