finished tip calculator with decimal rounding

kmr18006 · Feb 15, 2024 · 7f2223f · 7f2223f
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diff --git a/week-05/.gitignore b/week-05/.gitignore
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+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
diff --git a/week-05/README.md b/week-05/README.md
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+# Tip Calculator
+An exercise in JavaScript function definitions and return values. Course: DMD 3475. 
+
+## Introduction
+Our tip calculator application is almost complete. Our function named `updateValues()` will fetch the values that were input by the user. 
+
+At that point, the values are passed as arguments to two functions named `calculateTipPerPerson()` and `calculateTotalPerPerson()`. The values that are returned by each function are used to update the DOM.
+
+## Instructions
+
+1. Define both required functions: `calculateTipPerPerson()` and `calculateTotalPerPerson()`.
+2. Each function should accept the 3 arguments being passed to them within the `updateValues()` function.
+3. Using those values, calculate and return the appropriate answer.
+4. Extra credit: Properly round the dollars and cents that are returned by your functions.
+
+## Helpful Information
+* Search Google for "Tip Calculator" to see the desired functionality for this application.
+* The `calculateTotalPerPerson()` function should return a value that includes the tip.
diff --git a/week-05/css/main.css b/week-05/css/main.css
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+body {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    min-height: 100vh;
+}
+
+.card {
+    width: 400px;
+    max-width: 100%;
+}
+
+.card-image img {
+    height: 100px;
+    object-fit: cover;
+    object-position: center;
+}
+
+.card-content .row {
+    margin: 0;
+}
+
+
+.card .card-image .card-title {
+    font-weight: bold;
+    text-shadow: 2px 2px 3px black;
+    padding-bottom: 12px;
+}
diff --git a/week-05/images/bg.jpg b/week-05/images/bg.jpg
diff --git a/week-05/index.html b/week-05/index.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Tip Calculator</title>
+    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">
+    <link rel="stylesheet" href="css/main.css">
+</head>
+<body class="blue darken-3"> 
+
+
+    <div class="card z-depth-2">
+        <div class="card-image">
+            <img src="images/bg.jpg">
+            <span class="card-title">Tip Calculator</span>
+        </div>
+        <div class="card-content">
+            <div class="row">
+                <form class="col s12">
+                    <div class="row"> 
+                        <div class="input-field">
+                            <i class="material-icons prefix">attach_money</i>
+                            <input type="number" id="total" value="100.00" min="1"></input>
+                            <label for="total">Bill Total</label>
+                        </div>
+                        <div class="input-field">
+                            <i class="material-icons prefix">pie_chart</i>
+                            <input type="number" id="tip" value="15" min="0"></input>
+                            <label for="tip">Tip Percentage</label>
+                        </div>
+                        <div class="input-field">
+                            <i class="material-icons prefix">group_add</i>
+                            <input type="number" id="people" value="1" min="1"></input>
+                            <label for="people">Number of People</label>
+                        </div>
+                    </div>
+                </form>
+            </div>
+        </div>
+        <div class="card-action">
+            <div class="row">
+                <div class="col s6">
+                    Tip (per person): $<span class="tipOutput"></span>
+                </div>
+                <div class="col s6">
+                    Total (per person): $<span class="totalOutput"></span>
+                </div>
+            </div>
+        </div>
+    </div>
+
+
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
+    <script src="js/script.js"></script>
+</body>
+</html>
diff --git a/week-05/js/script.js b/week-05/js/script.js
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+/**
+ * Get references to each of the form inputs
+ */
+let total = document.querySelector('#total');
+let tip = document.querySelector('#tip');
+let people = document.querySelector('#people');
+
+/**
+ * Whenever the fields are updated, we call
+ * the updateValues function. 
+ */
+total.addEventListener('change', updateValues);
+total.addEventListener('keyup', updateValues);
+tip.addEventListener('change', updateValues);
+tip.addEventListener('keyup', updateValues);
+people.addEventListener('change', updateValues);
+people.addEventListener('keyup', updateValues);
+
+/**
+ * We will need references for the span tags
+ * that we will use to output our results.
+ */
+let tipOutput = document.querySelector(".tipOutput");
+let totalOutput = document.querySelector(".totalOutput");
+
+/**
+ * This function is run every time an input is changed
+ * by a user.
+ */
+function updateValues(event){
+
+    // Get the latest values from our form inputs
+    let totalValue = total.value;
+    let tipValue = tip.value;
+    let peopleValue = people.value;
+
+    // Update the values on the screen
+    tipOutput.innerText = calculateTipPerPerson(totalValue, tipValue, peopleValue);
+    totalOutput.innerText = calculateTotalPerPerson(totalValue, tipValue, peopleValue);
+}
+
+/**
+ * Your code goes down here ...
+ * @todo Write functions for calculateTipPerPerson() and calculateTotalPerPerson()
+ */
+
+function calculateTipPerPerson(totalValue, tipValue, peopleValue) {
+    tipValue /= 100;
+    let tipPerPerson = (totalValue*tipValue)/peopleValue;
+    tipPerPerson = tipPerPerson.toFixed(2)
+    return tipPerPerson;
+}
+
+function calculateTotalPerPerson (totalValue, tipValue, peopleValue) {
+    tipValue = 1 + (tipValue/100);
+    let totalPerPerson = (totalValue*tipValue)/peopleValue;
+    totalPerPerson = totalPerPerson.toFixed(2)
+    return totalPerPerson;
+}