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<div class="container-fluid" id="container">
<form>
<div class="row" id="header">
<div class="col-12">
<h1 class="text-center">Tip Calculator</h1>
</div>
</div>
<div class="row" id="bill-section">
<div class="col-12">
<h3>Bill amount</h3>
</div>
<div class="col-12">
<input id="bill-input" type="text" placeholder="$0.00" maxlength="8" inputmode="numeric">
<!--SET CHARACTER LIMITS-->
</div>
</div>
<div class="row" id="tip-section">
<div class="col-12">
<h3>How was the service?</h3>
</div>
<div class="col-12">
<div class="row" id="tip-button-section">
<div class="col-md col-12">
<div class="tip-buttons" id="tip-not-great" data-value="10">10%</div>
</div>
<div class="col-md col-12">
<div class="tip-buttons" id="tip-average" data-value="15">15%</div>
</div>
<div class="col-md col-12">
<div class="tip-buttons" id="tip-great" data-value="18">18%</div>
</div>
<div class="col-md col-12">
<div class="tip-buttons" id="tip-excellent" data-value="20">20%</div>
</div>
<div class="col-md col-12">
<div class="tip-buttons custom" id="tip-custom">
<span class="custom" id="tip-custom-text">Custom</span>
<span class="custom" id="tip-custom-input"><input class="custom" type="text" maxlength="3" inputmode="numeric">%</span>
</div>
</div>
</div>
</div>
</div>
<div class="row" id="split-section">
<div class="col-1"></div>
<div class="col-10">
<label for="split-toggle-box">
<input id="split-toggle-box" type="checkbox" name="split-toggle-box"> Split the check?
</label>
</div>
<div class="col-1"></div>
<div class="col-1"></div>
<div class="col-10">
<span id="split-prompt">
Split the check between
<select id="split-selection">
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
</select>
people
</span>
</div>
<div class="col-1"></div>
</div>
<div class="row" id="totals-section">
<div class="col-12 col-md-6">
<h4 class="text-center">Your tip</h4>
<p class="text-center" id="tip-output">$0.00</p>
</div>
<div class="col-12 col-md-6">
<h4 class="text-center">Total due</h4>
<p class="text-center" id="total-output">$0.00</p>
</div>
</div>
</form>
</div>
<div class="container-fluid" id="footer">
<div class="row">
<div class="col-12">
<p class="text-center"><em>yanssel.com © 2024</em></p>
</div>
</div>
</div>
//Text variables
$font-family: 'Varela Round', sans-serif;
$main-title-size: 30px;
$normal-title-size: 24px;
$normal-text-size: 20px;
//Color variables
$primary-default: #152B42;
$primary-light: #1159A6;
$primary-dark: #152B42;
$primary-default-text: black;
$primary-light-text: black;
$primary-dark-text: white;
$bill-text: #152B42;
//General
body {
font-family: $font-family;
font-size: $normal-text-size;
}
h1 {
font-size: $main-title-size;
font-weight: 800;
letter-spacing: 1px;
}
h3 {
font-size: $normal-title-size;
}
//Header
#header {
//Layout
position: relative;
height: 10vh;
min-height: 50px;
//Design
color: $primary-dark-text;
background-color: $primary-dark;
h1 {
line-height: max(10vh, 50px);
}
}
//Bill section
#bill-section {
//Layout
position: relative;
margin-top: 5vh;
input {
//Layout
position: relative;
width: 100%;
height: 8vh;
min-height: 50px;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
//Text
text-align: center;
font-size: 30px;
color: $bill-text;
//Design
border-radius: 15px;
border: 2px solid;
border-color: gray;
outline: none;
}
}
//Tip section
#tip-section {
//Layout
position: relative;
margin-top: 5vh;
}
.tip-buttons {
//Layout
position: relative;
height: 6vh;
min-height: 25px;
margin-top: 4px;
margin-bottom: 4px;
//Text
text-align: center;
color: $primary-dark-text;
line-height: max(6vh, 25px);
//Design
border-radius: 15px;
background-color: $primary-light;
}
.tip-buttons:hover {
//Design
cursor: pointer;
//Animation
animation-name: tip-back;
animation-duration: 250ms;
animation-fill-mode: forwards;
}
@keyframes tip-back {
100% {
color: $primary-dark-text;
background-color: $primary-dark;
}
}
#tip-custom-input {
//Layout
position: relative;
display: none;
input {
//Layout
position: relative;
width: 40px;
min-height: 20px;
height: 4vh;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
//Text
text-align: right;
//Design
outline: none;
color: white;
background-color: $primary-dark;
border-top: 0;
border-left: 0;
border-right: 0;
border-bottom: 1px solid;
border-color: white;
}
}
//Split section
#split-section {
//Layout
position: relative;
margin-top: 5vh;
//Text
text-align: center;
}
#split-prompt {
//Layout
display: none;
select {
//Layout
position: relative;
//Design
border-left: 0;
border-right: 0;
border-top: 0;
border-bottom: 1px solid;
outline: 0;
background-color: white;
}
}
//Totals section
#totals-section {
//Layout
position: relative;
margin-top: 5vh;
margin-bottom: 10vh;
h4 {
color: $primary-dark;
}
}
//Footer
#container {
//Layout
position: relative;
min-height: 100vh;
margin-bottom: -50px;
}
#footer {
//Layout
position: relative;
width: 100%;
height: 50px;
bottom: 0;
//Text
font-size: 14px;
//Design
background-color: $primary-default;
.col-12 {
//Layout
position: relative;
min-height: 50px;
display: flex;
flex-direction: column;
justify-content: center;
}
p {
margin: 0;
}
a {
//Text
text-decoration: underline;
//Design
color: white;
}
}
/*Set DOM objects to variables*/
const billInput = document.querySelector('#bill-input'); //The bill input box
const tipNotGreat = document.querySelector('#tip-not-great'); //The 'not great' tip button
const tipAverage = document.querySelector('#tip-average'); //The 'average' tip button
const tipGreat = document.querySelector('#tip-great'); //The 'great' tip button
const tipExcellent = document.querySelector('#tip-excellent'); //The 'excellent' tip button
const tipCustom = document.querySelector('#tip-custom'); //The 'custom' tip button
const tipCustomInput = document.querySelector('#tip-custom-input'); //The custom tip input box
const tipButtons = document.querySelectorAll('.tip-buttons'); //The node list of all tip buttons
const splitToggleBox = document.querySelector('#split-toggle-box'); //The splitting checkbox
const splitPrompt = document.querySelector('#split-prompt'); //The split selection prompt
const splitSelection = document.querySelector('#split-selection'); //The selection box for splitting the check
const tipOutput = document.querySelector('#tip-output'); //The tip output box
const totalOutput = document.querySelector('#total-output'); //The total output box
/*Set color constants*/
const primaryDefault = 'rgb(21, 43, 66)';
const primaryLight = 'rgb(17, 89, 166)';
const primaryDark = 'rgb(21, 43, 66)';
//Set initial tip button styling
tipAverage.style.color = 'white';
tipAverage.style.backgroundColor = primaryDark;
/*Tip calculator object*/
let tipCalculator = {
//Values
bill: 0,
tipPercent: 15,
split: 1,
tip: 0,
total: 0,
//Getters
getBill: function() {
console.log(this.bill);
return this.bill;
},
getTipPercent: function() {
console.log(this.tipPercent);
return this.tipPercent;
},
getTip: function() {
console.log(this.tip);
return this.tip;
},
getTotal: function () {
console.log(this.total);
return this.total;
},
//Setters
setBill: function(newBill) {
this.bill = (Math.round(newBill * 100)) / 100;
this.recalculate(); //Recalculate tip and total
/*console.log("Bill: " + this.bill);
console.log("Percent: " + this.tipPercent);
console.log("Split: " + this.split);
console.log("Tip: " + this.tip);
console.log("Total: " + this.total);*/
},
setTipPercent: function(newTipPercent) {
this.tipPercent = newTipPercent;
this.recalculate(); //Recalculate tip and total
/*console.log("Bill: " + this.bill);
console.log("Percent: " + this.tipPercent);
console.log("Split: " + this.split);
console.log("Tip: " + this.tip);
console.log("Total: " + this.total);*/
},
setSplit: function(newSplit) {
this.split = newSplit;
this.recalculate();
/*console.log("Bill: " + this.bill);
console.log("Percent: " + this.tipPercent);
console.log("Split: " + this.split);
console.log("Tip: " + this.tip);
console.log("Total: " + this.total);*/
},
//Calculator
recalculate: function() { //Function to recalculate tip and total
//Recalculate
this.tip = Math.round(this.bill * this.tipPercent) / 100;
this.total = Math.round((this.bill + this.tip) * 100) / 100;
//Display totals
let splitTip = Math.round((this.tip * 100) / this.split) / 100;
let splitTotal = Math.round((this.total * 100) / this.split) / 100;
tipOutput.textContent = '$' + splitTip.toFixed(2);
totalOutput.textContent = '$' + splitTotal.toFixed(2);
}
};
/*Functions*/
let generateListeners = () => { //Function to generate all event listeners
billInput.addEventListener('input', cleanBillInput);
billInput.addEventListener('change', submitBillInput);
tipCustomInput.addEventListener('input', cleanCustomInput);
tipCustomInput.addEventListener('change', submitCustomInput);
splitToggleBox.addEventListener('change', toggleSplit);
splitSelection.addEventListener('change', updateSplit);
for (let i = 0; i < tipButtons.length; i++) {
tipButtons[i].addEventListener('click', changeTip);
}
};
let cleanBillInput = (e) => { //Keep bill input in the following format: $0.00
//Grab input
let inputValue = e.target.value;
let inputValueArr = inputValue.split('');
//Store digits only
let numberTest = /\d/;
let numberArr = inputValueArr.filter(char => numberTest.test(char));
//Ensure array is not empty (push a 0 if it is)
if (numberArr.length === 0) { numberArr.push('0'); }
//Remove excess zeroes
let cleanArr = parseInt(numberArr.join('')).toString().split('');
//Generate return value
let cleanValue = '$0.00';
if (cleanArr.length === 1) {
cleanValue = '$0.0' + cleanArr[0];
} else if (cleanArr.length === 2) {
cleanValue = '$0.' + cleanArr[0] + cleanArr[1];
} else if (cleanArr.length === 3) {
cleanValue = '$' + cleanArr[0] + '.' + cleanArr[1] + cleanArr[2];
} else {
cleanValue = cleanArr
.concat([])
.reverse()
.map((char, ind) => {
return ind === 1 ? '.' + char : ind === cleanArr.length - 1 ? '$' + char : char;
})
.reverse()
.join('');
}
//Output clean value
e.target.value = cleanValue;
};
let submitBillInput = (e) => { //Change bill amount
//Grab input
let inputValue = e.target.value;
//Remove $ from input and turn into a number
let stringBillValue = inputValue
.split('')
.filter(char => char != '$')
.join('');
let numberBillValue = parseFloat(stringBillValue);
//Submit new bill value for calculation
tipCalculator.setBill(numberBillValue);
};
let changeTip = (e) => {
//Grab button
let button = e.target;
if (button.className !== 'tip-buttons') { button = tipCustom; } //Ensure we capture the appropriate button (and not its children)
//Reset all button colors
for (let i = 0; i < tipButtons.length; i++) {
tipButtons[i].style.color = 'white';
tipButtons[i].style.backgroundColor = primaryLight;
}
//Set selected button styling
button.style.color = 'white';
button.style.backgroundColor = primaryDark;
//Grab the custom button's children
let customText = tipCustom.firstChild.nextSibling;
let customInput = tipCustom.lastChild.previousSibling;
if (e.target.classList.contains('custom')) { //Check to see whether the user is aiming to submit a custom tip
//Reveal custom input box
customText.style.display = 'none';
customInput.style.display = 'block';
customInput.firstChild.focus(); //Focus specifically on the <input> tag itself
} else {
//Hide custom input, in case it's active, and wipe input value
customText.style.display = 'block';
customInput.style.display = 'none';
customInput.firstChild.value = ''; //Reset the value of the <input> tag itself
//Clean and submit the tip
let tipCheck = Math.abs(parseInt(e.target.getAttribute('data-value'))); //Turn data-value into an integer and get the absolute value to disallow negative values
let tipValue = typeof tipCheck === 'number' ? tipCheck : 15; //Only save value if it's a number, otherwise default to 15
tipCalculator.setTipPercent(tipValue);
}
};
let cleanCustomInput = (e) => {
//Grab custom tip input
let customInputValue = e.target.value;
//Only allow for numbers
let numberTest = /\d/;
let cleanValue = customInputValue
.split('')
.filter(char => numberTest.test(char))
.join('');
//Display clean input
e.target.value = cleanValue;
};
let submitCustomInput = (e) => {
//Clean and submit custom tip
let tipCheck = Math.abs(parseInt(e.target.value)); //Turn value into an integer and get the absolute value to disallow negative values
let tipValue = tipCheck > -1 ? tipCheck : 15; //Only save value if it's a number, otherwise default to 15
tipCustomInput.firstChild.value = tipValue;
tipCalculator.setTipPercent(tipValue);
};
let toggleSplit = (e) => {
//Grab checkbox state
let checked = splitToggleBox.checked;
//Toggle display and set initial split value
if (checked === true) {
//Make prompt visible
splitPrompt.style.display = 'inline';
//Set split value to 2
tipCalculator.setSplit(2);
} else {
//Hide prompt
splitPrompt.style.display = 'none';
//Set split value to 1
tipCalculator.setSplit(1);
//Reset selection
splitSelection.value = '2';
}
};
let updateSplit = (e) => {
//Grab split value
let splitInput = e.target.value;
//Make string value numeric
let splitValue = parseInt(splitInput);
//Update split value
tipCalculator.setSplit(splitValue);
};
/*Generate event listeners*/
generateListeners();
Also see: Tab Triggers