Adam maley

README.md

@@ -30,14 +30,32 @@ Edit this document to include your answers after each question. Make sure to lea
 
 1. Describe the biggest difference between `.forEach` & `.map`.
 
+Map creates a new array with the results, forEach does not. ForEach just executes the function once for each array element.
+
 2. What is the difference between a function and a method?
 
+A method is a function that belongs to an object.
+
 3. What is closure?
 
+Similar to "Scope".  A closure is the scope that allows innter functions the ability to access outer functions variables.
+
 4. Describe the four rules of the 'this' keyword.
 
+Is the function called by new?
+Is the function called by call(), apply(), or bind()?
+Is the function called as a method, ie: obj.func()?
+Is the function called in the global scope?
+    (If strict mode is enabled, return undefined.)
+    (Otherwise, return the global object, ie: window.)
+
 5. Why do we need super() in an extended class?
 
+Super calls the constructor of the parent class.
+Extend allows a new class to inherit what it is Extending.  i.e : class Worker extends Person
+
+
+
 ## Project Set up
 
 Follow these steps to set up and work on your project:

challenges/classes.js

@@ -1,7 +1,16 @@
 // 1. Copy and paste your prototype in here and refactor into class syntax.
 
+
+class CuboidMaker {
+    constructor(length, width, height) {
+        this.length = length;
+        this.width = width;
+        this.height = height;
+    }
+}
+
 // Test your volume and surfaceArea methods by uncommenting the logs below:
-// console.log(cuboid.volume()); // 100
-// console.log(cuboid.surfaceArea()); // 130
+console.log(cuboidObject.volume()); // 100
+console.log(cuboidObject.surfaceArea()); // 130
 
 // Stretch Task: Extend the base class CuboidMaker with a sub class called CubeMaker.  Find out the formulas for volume and surface area for cubes and create those methods using the dimension properties from CuboidMaker.  Test your work by logging out your volume and surface area.

challenges/functions.js

@@ -6,26 +6,41 @@
   * The last parameter accepts a callback
   * The consume function should return the invocation of cb, passing a and b into cb as arguments
 */
-
+function consume(a,b, cb){
+  return cb(a,b);
+}
 
 /* Step 2: Create several functions to callback with consume();
   * Create a function named add that returns the sum of two numbers
   * Create a function named multiply that returns the product of two numbers 
-  * Create a function named greeting that accepts a first and last name and returns "Hello first-name last-name, nice to meet you!"
+  * Create a function named greeting that accepts a first and last name and returns "Hello first-name last-name, nice to meet you!"  
 */
 
+// Why are first-name and last-name not camel cased in the instructions?  <-------
+function add(a,b) {
+  return a + b;
+}
+
+function multiply(a,b) {
+  return a * b;
+}
+
+function greeting(firstName, lastName) {
+  return "Hello " + firstName + lastName + ", nice to meet you!";
+}
+
+// /* Step 3: Check your work by un-commenting the following calls to consume(): */
+console.log(consume(2, 2, add)); // 4
+console.log(consume(10, 16, multiply)); // 160
+console.log(consume("Mary", "Poppins", greeting)); // Hello Mary Poppins, nice to meet you!
 
-/* Step 3: Check your work by un-commenting the following calls to consume(): */
-// console.log(consume(2, 2, add)); // 4
-// console.log(consume(10, 16, multiply)); // 160
-// console.log(consume("Mary", "Poppins", greeting)); // Hello Mary Poppins, nice to meet you!
 
 
 // ==== Closures ==== 
 
 // Explain in your own words why nestedfunction can access the variable internal.
 
-// Explanation: 
+/* Explanation: Children in the closure(or scope) can access their parents variables. */
 
 
 const external = "I'm outside the function";

challenges/objects-arrays.js

@@ -6,29 +6,43 @@
   object name, diet, weight, length, period
 */
 
+function Dinosaur(name, diet, weight, length, period) {
+  this.name = name;
+  this.diet = diet;
+  this.weight = weight;
+  this.length = length;
+  this.period = period;
+}
+
 // tyrannosaurus, carnivorous, 7000kg, 12m, Late Cretaceous
+const tyrannosaurus = new Dinosaur("tyrannosaurus", "carnivorous", "7000kg", "12m", "Late Cretaceous");
 
 // stegosaurus, herbivorous, 2000kg, 9m, Late Jurassic
+const stegosaurus = new Dinosaur("stegosaurus", "herbivorous", "2000kg", "9m", "Late Jurassic");
 
 // velociraptor, carnivorous, 15kg, 1.8m, Late Cretaceous
+const velociraptor = new Dinosaur("velociraptor", "carnivorous", "15kg", "1.8m", "Late Cretaceous");
 
 // Using your dinosaur objects, log answers to these questions:
 
 // How much did tyrannosaurus weigh?
-console.log();
+console.log(tyrannosaurus.weight);
 
 // What was the diet of a velociraptor?
-console.log();
+console.log(velociraptor.diet);
 
 // How long was a stegosaurus?
-console.log();
+console.log(stegosaurus.length);
 
 // What time period did tyrannosaurus live in?
-console.log();
+console.log(tyrannosaurus.period);
 
 
 // Create a new roar method for the tyrannosaurus.  When called, return "RAWERSRARARWERSARARARRRR!" Log the result.
-console.log();
+tyrannosaurus.roar = function() {
+  console.log(tyrannosaurus.roar);
+  return "RAWERSRARARWERSARARARRRR!"
+}
 
 
 // ==== Arrays ====
@@ -48,23 +62,35 @@ const graduates = [
   { id: 10, first_name: "Hube", university: "Universitat Rovira I Virgili Tarragona", email: "hlethbrig9@foxnews.com" },
 ];
 
-/* Request 1: Create a new array called universities that contains all the universities in the graduates array. This will be an array of strings.
+/* Request 1: Create a new array called universities that contains all the universities in the graduates array. This will be an array of strings.*/
 
-Once you have the new array created, sort the universities alphabetically and log the result. */
-const universities = [];
+const universities = graduates.map((graduate) => graduate.university);
 console.log(universities);
 
-/* Request 2: Create a new array called contactInfo that contains both first name and email of each student. This will be an array of strings.
+/*Once you have the new array created, sort the universities alphabetically and log the result. */
+// const universities = [];
+const sortedUniversities = universities.sort();
+console.log(sortedUniversities);
+
+/* Request 2: Create a new array called contactInfo that contains both first name and email of each student. This will be an array of strings.*/
+
+function getFullName(item) {
+  var fullName= [item.first_name,item.email].join(" ");
+  return fullName;
+}
+
+const contactInfo = graduates.map(getFullName);
 
-The resulting contact information strings should have a space between the first name and the email, like this: 
-"Josh josh@example.com"
+/* The resulting contact information strings should have a space between the first name and the email, like this: 
+"Josh josh@example.com" */
 
-Log the result of your new array. */
-const contactInfo = [];
+/* Log the result of your new array. */
+// const contactInfo = [];
 console.log(contactInfo);
 
 /* Request 3: Find out how many universities have the string "Uni" included in their name. Create a new array called unisWithUni that contains them all. This will be an array of objects. Log the result. */
-const unisWithUni = [];
+// const unisWithUni = [];
+const unisWithUni = graduates.filter(name => name.university.includes("Uni"))
 console.log(unisWithUni);
 
 
@@ -91,15 +117,22 @@ The zoos want to display both the scientific name and the animal name in front o
 
 */
 const displayNames = [];
+const namePlusScientificName = zooAnimals.forEach(function(animal) {
+  displayNames.push("Name: " + animal.name + "Scientific: " + animal.scientific_name);
+});
 console.log(displayNames);
 
 /* Request 2: .map()
 
-The zoos need a list of all their animal's names (animal_name only) converted to lower case. Using map, create a new array of strings named lowCaseAnimalNames, each string following this pattern: "jackal, asiatic". Log the resut.
-
-*/
+The zoos need a list of all their animal's names (animal_name only) converted to lower case. Using map, create a new array of strings named lowCaseAnimalNames, each string following this pattern: "jackal, asiatic". Log the resut*/
 
 const lowCaseAnimalNames = [];
+function toLower(item) {
+  lowCaseAnimalNames.push(item.animal_name.toLowerCase());
+}
+
+var animalNamesLower = zooAnimals.map(toLower);
+
 console.log(lowCaseAnimalNames);
 
 /* Request 3: .filter() 
@@ -108,6 +141,12 @@ The zoos are concerned about animals with a lower population count. Using filter
 
 */
 const lowPopulationAnimals = [];
+
+const result = zooAnimals.filter(animal => animal.population < 5);
+
+function pushToEmpty(result) {
+  lowPopulationAnimals.push(result);
+}
 console.log(lowPopulationAnimals);
 
 /* Request 4: .reduce() 
@@ -116,6 +155,16 @@ The zoos need to know their total animal population across the United States. Fi
 
 */
 const populationTotal = 0;
+
+const newReduced = zooAnimals.reduce((accumulator, currentValue) => {
+  return accumulator + currentValue;
+}, 0);
+
+function pushNewReduced(newReduced) {
+  populationTotal.push(newReduced);
+}
+
+
 console.log(populationTotal);
 
 

challenges/prototypes.js

@@ -6,12 +6,21 @@
   Create a constructor function named CuboidMaker that accepts properties for length, width, and height
 */
 
+function CuboidMaker(length, width, height) {
+  this.length = length;
+  this.width = width;
+  this.height = height;
+}
+
 
 /* == Step 2: Volume Method ==
   Create a method using CuboidMaker's prototype that returns the volume of a given cuboid's length, width, and height
 
   Formula for cuboid volume: length * width * height
 */
+CuboidMaker.prototype.volume = function() {
+  return this.length * this.width * this.height;
+}
 
 
 /* == Step 3: Surface Area Method ==
@@ -20,14 +29,18 @@
   Formula for cuboid surface area of a cube: 2 * (length * width + length * height + width * height)
 */
 
+CuboidMaker.prototype.SurfaceAreaMethod = function() {
+  return 2 * ( this.length * this.width + this.length * this.height + this.width * this.height);
+}
 
 /* == Step 4: Create a new object that uses CuboidMaker ==
   Create a cuboid object that uses the new keyword to use our CuboidMaker constructor
   Add properties and values of length: 4, width: 5, and height: 5 to cuboid.   
 */
 
+const cuboidObject = new CuboidMaker(4,5,5);
 // Test your volume and surfaceArea methods by uncommenting the logs below:
-// console.log(cuboid.volume()); // 100
-// console.log(cuboid.surfaceArea()); // 130
+console.log(cuboidObject.volume()); // 100
+console.log(cuboidObject.surfaceArea()); // 130