From 1ed8917a4e6d3d19c3a496a76eca3a0913b24adb Mon Sep 17 00:00:00 2001
From: squashgray <squashgray@gmail.com>
Date: Fri, 18 Oct 2019 08:06:25 -0700
Subject: [PATCH 1/9] readme questions

---
 README.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/README.md b/README.md
index 408612117c..e70f86f869 100644
--- a/README.md
+++ b/README.md
@@ -30,14 +30,29 @@ Edit this document to include your answers after each question. Make sure to lea
 
 1. Describe the biggest difference between `.forEach` & `.map`.
 
+ANSWER :  forEach just calls a function and doesn't return a new array, map does return a new array
+
 2. What is the difference between a function and a method?
 
+ANSWER : functions can be used on anything,  methods are used on objects.
+
 3. What is closure?
 
+ANSWER : variables that can be accessed through inheritance, giving an inner function access to an outer functions variables.
+
 4. Describe the four rules of the 'this' keyword.
+ ANSWER: Window binding : 'this' goes to the window/console object
+   
+   Implicit binding : when a function references the object to the left of the dot (.)
+
+   New binding : used in conjunction with a constructor function, using the 'new' keyword will make am enitrely new object with the values inside the parentheses.
+   
+   Explicit binding : use call or apply to change what 'this' points to
 
 5. Why do we need super() in an extended class?
 
+ANSWER:  When using Classes they link the child object to the parent object, which dictates what the child will inherit
+
 ## Project Set up
 
 Follow these steps to set up and work on your project:

From 8db6cb2c2f01a8bbc20da9a966d515b09ca9ed40 Mon Sep 17 00:00:00 2001
From: squashgray <squashgray@gmail.com>
Date: Fri, 18 Oct 2019 08:17:27 -0700
Subject: [PATCH 2/9] functions

---
 .vscode/settings.json        |  3 +++
 challenges/functions.js      | 21 +++++++++++++++++----
 challenges/objects-arrays.js | 29 ++++++++++++++++++++++++++++-
 3 files changed, 48 insertions(+), 5 deletions(-)
 create mode 100644 .vscode/settings.json

diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000000..6f3a2913e1
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "liveServer.settings.port": 5501
+}
\ No newline at end of file
diff --git a/challenges/functions.js b/challenges/functions.js
index 6e3688bfcc..a8610dd54a 100644
--- a/challenges/functions.js
+++ b/challenges/functions.js
@@ -7,18 +7,29 @@
   * 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!"
 */
-
+function add(num1, num2) {
+  return num1 + num2;
+}
+function multiply(num1, num2) {
+  return num1 * num2;
+}
+function greeting(a, b) {
+  return `Hello ${a} ${b}, 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!
+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 ==== 
@@ -27,6 +38,8 @@
 
 // Explanation: 
 
+// ANSWER : Because it inherited that variable from its outer function (myFunction) //
+
 
 const external = "I'm outside the function";
 
diff --git a/challenges/objects-arrays.js b/challenges/objects-arrays.js
index 659e3e149c..ca7f7e2f09 100644
--- a/challenges/objects-arrays.js
+++ b/challenges/objects-arrays.js
@@ -5,6 +5,33 @@
   Use this pattern to create your objects: 
   object name, diet, weight, length, period
 */
+const obj1 = {
+  name: 'tyrannosaurus',
+  diet: 'carnivorous',
+  weight: '7000kg',
+  length: '12m',
+  period: 'Late Cretaceous',
+  Roar(){ 
+    return "RAWERSRARARWERSARARARRRR!";
+
+  }
+}
+
+const obj2 = {
+  name: 'stegosaurus',
+  diet: 'herbivorous',
+  weight: '2000kg',
+  length: '9m',
+  period: 'Late Jurassic'
+}
+
+const obj3 = {
+  name: 'velociraptor',
+  diet: 'carnivorous',
+  weight: '15kg',
+  length: '1.8m',
+  period: 'Late Cretaceous'
+}
 
 // tyrannosaurus, carnivorous, 7000kg, 12m, Late Cretaceous
 
@@ -15,7 +42,7 @@
 // Using your dinosaur objects, log answers to these questions:
 
 // How much did tyrannosaurus weigh?
-console.log();
+console.log(obj1.weight);
 
 // What was the diet of a velociraptor?
 console.log();

From 0af8ba4f151e91380f820a7238a30eaed013fe48 Mon Sep 17 00:00:00 2001
From: squashgray <squashgray@gmail.com>
Date: Fri, 18 Oct 2019 09:10:25 -0700
Subject: [PATCH 3/9] objects-arrays

---
 challenges/objects-arrays.js | 35 +++++++++++++++++++++++++++++------
 1 file changed, 29 insertions(+), 6 deletions(-)

diff --git a/challenges/objects-arrays.js b/challenges/objects-arrays.js
index ca7f7e2f09..327e63f1ef 100644
--- a/challenges/objects-arrays.js
+++ b/challenges/objects-arrays.js
@@ -45,17 +45,17 @@ const obj3 = {
 console.log(obj1.weight);
 
 // What was the diet of a velociraptor?
-console.log();
+console.log(obj3.diet);
 
 // How long was a stegosaurus?
-console.log();
+console.log(obj2.length);
 
 // What time period did tyrannosaurus live in?
-console.log();
+console.log(obj1.period);
 
 
 // Create a new roar method for the tyrannosaurus.  When called, return "RAWERSRARARWERSARARARRRR!" Log the result.
-console.log();
+console.log(obj1.Roar());
 
 
 // ==== Arrays ====
@@ -79,6 +79,10 @@ const graduates = [
 
 Once you have the new array created, sort the universities alphabetically and log the result. */
 const universities = [];
+graduates.forEach((items) => {
+  return universities.push(`${items.university}`);
+});
+universities.sort();
 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.
@@ -88,10 +92,19 @@ The resulting contact information strings should have a space between the first
 
 Log the result of your new array. */
 const contactInfo = [];
+graduates.forEach((items) => {
+  return contactInfo.push(`${items.first_name} ${items.email}` );
+});
 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 = [];
+for (let i = 0; i < graduates.length; i++){                              
+  if (graduates[i].university == "Uni") {  
+      unisWithUni.push(graduates[i])
+  }
+};
+
 console.log(unisWithUni);
 
 
@@ -118,6 +131,10 @@ The zoos want to display both the scientific name and the animal name in front o
 
 */
 const displayNames = [];
+zooAnimals.forEach((items) => {
+  return displayNames.push(`${items.animal_name}, ${items.scientific_name}`);
+ 
+});
 console.log(displayNames);
 
 /* Request 2: .map()
@@ -127,6 +144,9 @@ The zoos need a list of all their animal's names (animal_name only) converted to
 */
 
 const lowCaseAnimalNames = [];
+zooAnimals.map((items) => {
+  return lowCaseAnimalNames.push(`${items.animal_name.toLowerCase()}`);
+});
 console.log(lowCaseAnimalNames);
 
 /* Request 3: .filter() 
@@ -134,7 +154,8 @@ console.log(lowCaseAnimalNames);
 The zoos are concerned about animals with a lower population count. Using filter, create a new array of objects called lowPopulationAnimals which contains only the animals with a population less than 5.
 
 */
-const lowPopulationAnimals = [];
+const lowPopulationAnimals = zooAnimals.filter(items => items.population < 5);
+
 console.log(lowPopulationAnimals);
 
 /* Request 4: .reduce() 
@@ -142,7 +163,9 @@ console.log(lowPopulationAnimals);
 The zoos need to know their total animal population across the United States. Find the total population from all the zoos using the .reduce() method. Remember the reduce method takes two arguments: a callback (which itself takes two args), and an initial value for the count.
 
 */
-const populationTotal = 0;
+const populationTotal = zooAnimals.reduce((accumulator, currentValue) =>{
+  return accumulator + currentValue.population;
+}, 0);
 console.log(populationTotal);
 
 

From 06d829088ad7ee823b8c17df1862ce491cad050d Mon Sep 17 00:00:00 2001
From: squashgray <squashgray@gmail.com>
Date: Fri, 18 Oct 2019 09:28:17 -0700
Subject: [PATCH 4/9] prototypes

---
 challenges/objects-arrays.js | 13 +++++++------
 challenges/prototypes.js     | 26 +++++++++++++++++++++-----
 2 files changed, 28 insertions(+), 11 deletions(-)

diff --git a/challenges/objects-arrays.js b/challenges/objects-arrays.js
index 327e63f1ef..54adcf562a 100644
--- a/challenges/objects-arrays.js
+++ b/challenges/objects-arrays.js
@@ -98,12 +98,13 @@ graduates.forEach((items) => {
 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 = [];
-for (let i = 0; i < graduates.length; i++){                              
-  if (graduates[i].university == "Uni") {  
-      unisWithUni.push(graduates[i])
-  }
-};
+const unisWithUni = graduates.map(items => items["university"]).filter(items => items.includes("Uni"));
+
+// for (let i = 0; i < graduates.length; i++){                              
+//   if (graduates[i].university === "Uni") {  
+//       unisWithUni.push(graduates[i])
+//   }
+// };
 
 console.log(unisWithUni);
 
diff --git a/challenges/prototypes.js b/challenges/prototypes.js
index 4cafc33e95..2db73ce587 100644
--- a/challenges/prototypes.js
+++ b/challenges/prototypes.js
@@ -6,28 +6,44 @@
   Create a constructor function named CuboidMaker that accepts properties for length, width, and height
 */
 
+function CuboidMaker(attributes) {
+  this.length = attributes.length,
+  this.width = attributes.width,
+  this.height = attributes.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 ==
   Create another method using CuboidMaker's prototype that returns the surface area of a given cuboid's length, width, and height. 
 
   Formula for cuboid surface area of a cube: 2 * (length * width + length * height + width * height)
 */
-
+CuboidMaker.prototype.surfaceArea = 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 cuboid = new CuboidMaker({
+  length: 4,
+  width: 5,
+  height: 5
+});
+
+// Test your volume and surfaceArea methods by uncommenting the logs below: //
 
-// Test your volume and surfaceArea methods by uncommenting the logs below:
-// console.log(cuboid.volume()); // 100
-// console.log(cuboid.surfaceArea()); // 130
+console.log(cuboid.volume()); // 100
+console.log(cuboid.surfaceArea()); // 130
 
 

From 7129a5e3530c2fb351c64d63e1e0faaa2e9f2152 Mon Sep 17 00:00:00 2001
From: squashgray <squashgray@gmail.com>
Date: Fri, 18 Oct 2019 09:34:59 -0700
Subject: [PATCH 5/9] classes

---
 challenges/classes.js    | 59 +++++++++++++++++++++++++++--
 challenges/prototypes.js | 82 ++++++++++++++++++++--------------------
 2 files changed, 97 insertions(+), 44 deletions(-)

diff --git a/challenges/classes.js b/challenges/classes.js
index 992e39dc0b..3780ca6f11 100644
--- a/challenges/classes.js
+++ b/challenges/classes.js
@@ -1,7 +1,60 @@
-// 1. Copy and paste your prototype in here and refactor into class syntax.
+// 1. Copy and paste your prototype in here and refactor into class syntax. //
+
+
+class CuboidMaker {
+    constructor(attributes){
+    this.length = attributes.length,
+    this.width = attributes.width,
+    this.height = attributes.height
+    }
+    volume = function() {
+        return this.length * this.width * this.height;
+    }
+    surfaceArea = function() {
+        return 2 * (this.length * this.width + this.length * this.height + this.width * this.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 ==
+    Create another method using CuboidMaker's prototype that returns the surface area of a given cuboid's length, width, and height. 
+  
+    Formula for cuboid surface area of a cube: 2 * (length * width + length * height + width * height)
+  */
+//   CuboidMaker.prototype.surfaceArea = 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 cuboid = new CuboidMaker({
+    length: 4,
+    width: 5,
+    height: 5
+  });
+
+
+
+
+
+
+
+
 
 // Test your volume and surfaceArea methods by uncommenting the logs below:
-// console.log(cuboid.volume()); // 100
-// console.log(cuboid.surfaceArea()); // 130
+
+console.log(cuboid.volume()); // 100
+console.log(cuboid.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.
\ No newline at end of file
diff --git a/challenges/prototypes.js b/challenges/prototypes.js
index 2db73ce587..fd2c2bf83b 100644
--- a/challenges/prototypes.js
+++ b/challenges/prototypes.js
@@ -1,49 +1,49 @@
-/* ===== Prototype Practice ===== */
+// /* ===== Prototype Practice ===== */
 
-// Task: You are to build a cuboid maker that can return values for a cuboid's volume or surface area. Cuboids are similar to cubes but do not have even sides. Follow the steps in order to accomplish this challenge.
+// // Task: You are to build a cuboid maker that can return values for a cuboid's volume or surface area. Cuboids are similar to cubes but do not have even sides. Follow the steps in order to accomplish this challenge.
 
-/* == Step 1: Base Constructor ==
-  Create a constructor function named CuboidMaker that accepts properties for length, width, and height
-*/
+// /* == Step 1: Base Constructor ==
+//   Create a constructor function named CuboidMaker that accepts properties for length, width, and height
+// */
 
-function CuboidMaker(attributes) {
-  this.length = attributes.length,
-  this.width = attributes.width,
-  this.height = attributes.height
+// // function CuboidMaker(attributes) {
+// //   this.length = attributes.length,
+// //   this.width = attributes.width,
+// //   this.height = attributes.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
+// /* == 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 ==
-  Create another method using CuboidMaker's prototype that returns the surface area of a given cuboid's length, width, and height. 
-
-  Formula for cuboid surface area of a cube: 2 * (length * width + length * height + width * height)
-*/
-CuboidMaker.prototype.surfaceArea = 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 cuboid = new CuboidMaker({
-  length: 4,
-  width: 5,
-  height: 5
-});
-
-// Test your volume and surfaceArea methods by uncommenting the logs below: //
-
-console.log(cuboid.volume()); // 100
-console.log(cuboid.surfaceArea()); // 130
+//   Formula for cuboid volume: length * width * height
+// */
+// // CuboidMaker.prototype.volume = function() {
+// //   return this.length * this.width * this.height;
+// // }
+
+// /* == Step 3: Surface Area Method ==
+//   Create another method using CuboidMaker's prototype that returns the surface area of a given cuboid's length, width, and height. 
+
+//   Formula for cuboid surface area of a cube: 2 * (length * width + length * height + width * height)
+// */
+// // CuboidMaker.prototype.surfaceArea = 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 cuboid = new CuboidMaker({
+// //   length: 4,
+// //   width: 5,
+// //   height: 5
+// // });
+
+// // Test your volume and surfaceArea methods by uncommenting the logs below: //
+
+// // console.log(cuboid.volume()); // 100
+// // console.log(cuboid.surfaceArea()); // 130
 
 

From 28930d9ff0ecad79bca8d0fe0d864ecd51aa946d Mon Sep 17 00:00:00 2001
From: squashgray <squashgray@gmail.com>
Date: Fri, 18 Oct 2019 09:47:00 -0700
Subject: [PATCH 6/9] classes - stretch attempt

---
 challenges/classes.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/challenges/classes.js b/challenges/classes.js
index 3780ca6f11..a42d47b659 100644
--- a/challenges/classes.js
+++ b/challenges/classes.js
@@ -16,6 +16,13 @@ class CuboidMaker {
   
   }
   
+  class CubeMaker extends CuboidMaker {
+      constructor(cubeAttributes){
+          super(cubeAttributes);
+      }
+      
+  }
+
   /* == Step 2: Volume Method ==
     Create a method using CuboidMaker's prototype that returns the volume of a given cuboid's length, width, and height
     
@@ -44,6 +51,12 @@ class CuboidMaker {
     height: 5
   });
 
+  const cube = new CubeMaker({
+    length: 4,
+    width:4,
+    height: 4
+  });
+
 
 
 

From f290cc80a8817d547a498337ce9a9443fc2aacf0 Mon Sep 17 00:00:00 2001
From: squashgray <squashgray@gmail.com>
Date: Fri, 18 Oct 2019 09:51:11 -0700
Subject: [PATCH 7/9] function question addition

---
 challenges/functions.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/challenges/functions.js b/challenges/functions.js
index a8610dd54a..a08d29505c 100644
--- a/challenges/functions.js
+++ b/challenges/functions.js
@@ -38,7 +38,7 @@ console.log(consume("Mary", "Poppins", greeting)); // Hello Mary Poppins, nice t
 
 // Explanation: 
 
-// ANSWER : Because it inherited that variable from its outer function (myFunction) //
+// ANSWER : Because of Closure it inherited that variable from its outer function, the outer function (myFunction) works like a parent to the (nestedFunction) child  //
 
 
 const external = "I'm outside the function";

From f2680c33e75b24f6a6b12f3949c5fb543aa35fcf Mon Sep 17 00:00:00 2001
From: squashgray <squashgray@gmail.com>
Date: Fri, 18 Oct 2019 10:30:53 -0700
Subject: [PATCH 8/9] class stretch

---
 challenges/classes.js    | 11 +++++-
 challenges/prototypes.js | 82 ++++++++++++++++++++--------------------
 2 files changed, 51 insertions(+), 42 deletions(-)

diff --git a/challenges/classes.js b/challenges/classes.js
index a42d47b659..8476cc9d0c 100644
--- a/challenges/classes.js
+++ b/challenges/classes.js
@@ -20,7 +20,12 @@ class CuboidMaker {
       constructor(cubeAttributes){
           super(cubeAttributes);
       }
-      
+      volume() {
+        return Math.pow(this.length, 3);
+    }
+    surfaceArea() {
+        return 6 * Math.pow(this.length, 2);
+    }
   }
 
   /* == Step 2: Volume Method ==
@@ -70,4 +75,8 @@ class CuboidMaker {
 console.log(cuboid.volume()); // 100
 console.log(cuboid.surfaceArea()); // 130
 
+
+console.log(cube.volume()); 
+console.log(cube.surfaceArea()); 
+
 // 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.
\ No newline at end of file
diff --git a/challenges/prototypes.js b/challenges/prototypes.js
index fd2c2bf83b..8b030fc15b 100644
--- a/challenges/prototypes.js
+++ b/challenges/prototypes.js
@@ -1,49 +1,49 @@
-// /* ===== Prototype Practice ===== */
+/* ===== Prototype Practice ===== */
 
-// // Task: You are to build a cuboid maker that can return values for a cuboid's volume or surface area. Cuboids are similar to cubes but do not have even sides. Follow the steps in order to accomplish this challenge.
+// Task: You are to build a cuboid maker that can return values for a cuboid's volume or surface area. Cuboids are similar to cubes but do not have even sides. Follow the steps in order to accomplish this challenge.
 
-// /* == Step 1: Base Constructor ==
-//   Create a constructor function named CuboidMaker that accepts properties for length, width, and height
-// */
+/* == Step 1: Base Constructor ==
+  Create a constructor function named CuboidMaker that accepts properties for length, width, and height
+*/
 
-// // function CuboidMaker(attributes) {
-// //   this.length = attributes.length,
-// //   this.width = attributes.width,
-// //   this.height = attributes.height
+// function CuboidMaker(attributes) {
+//   this.length = attributes.length,
+//   this.width = attributes.width,
+//   this.height = attributes.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
+/* == 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 ==
-//   Create another method using CuboidMaker's prototype that returns the surface area of a given cuboid's length, width, and height. 
-
-//   Formula for cuboid surface area of a cube: 2 * (length * width + length * height + width * height)
-// */
-// // CuboidMaker.prototype.surfaceArea = 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 cuboid = new CuboidMaker({
-// //   length: 4,
-// //   width: 5,
-// //   height: 5
-// // });
-
-// // Test your volume and surfaceArea methods by uncommenting the logs below: //
-
-// // console.log(cuboid.volume()); // 100
-// // console.log(cuboid.surfaceArea()); // 130
+  Formula for cuboid volume: length * width * height
+*/
+// CuboidMaker.prototype.volume = function() {
+//   return this.length * this.width * this.height;
+// }
+
+/* == Step 3: Surface Area Method ==
+  Create another method using CuboidMaker's prototype that returns the surface area of a given cuboid's length, width, and height. 
+
+  Formula for cuboid surface area of a cube: 2 * (length * width + length * height + width * height)
+*/
+// CuboidMaker.prototype.surfaceArea = 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 cuboid = new CuboidMaker({
+//   length: 4,
+//   width: 5,
+//   height: 5
+// });
+
+// Test your volume and surfaceArea methods by uncommenting the logs below: //
+
+// console.log(cuboid.volume()); // 100
+// console.log(cuboid.surfaceArea()); // 130
 
 

From e7793c7cf4c490d32cb1e890b0a9368313e80759 Mon Sep 17 00:00:00 2001
From: squashgray <squashgray@gmail.com>
Date: Fri, 18 Oct 2019 10:50:56 -0700
Subject: [PATCH 9/9] finish

---
 challenges/classes.js | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/challenges/classes.js b/challenges/classes.js
index 8476cc9d0c..e74264e2f8 100644
--- a/challenges/classes.js
+++ b/challenges/classes.js
@@ -62,14 +62,6 @@ class CuboidMaker {
     height: 4
   });
 
-
-
-
-
-
-
-
-
 // Test your volume and surfaceArea methods by uncommenting the logs below:
 
 console.log(cuboid.volume()); // 100