Class Exercises

Author: LanceOx

classes/chapter-examples/ClassExamples01.js

@@ -6,7 +6,7 @@ class Astronaut {
      this.mass = mass;
    }
 }
-
+//let wolf = new Astronaut('Wolf', 13, 26)
 let fox = new Astronaut('Fox', 7, 12);
 
 console.log(fox);
@@ -17,5 +17,45 @@ fox.color = 'red';
 
 console.log(fox);
 console.log(fox.age, fox.color);
+//console.log(wolf)
+
+//Try modifying or adding properties below.
+
+let wolf = new Astronaut();
+wolf.name = 'Wolfie';
+wolf.age = 13;
+wolf.mass = 26;
+
+
+console.log(wolf)
+
+
+// class Car {
+//   constructor(make, model, year, color, mpg){
+//      this.make = make;
+//      this.model = model;
+//      this.year = year;
+//      this.color = color;
+//      this.mpg = mpg;
+//   }
+// }
+
+//let myCar = new Car('Chevy', 'Astro', 1985, 'gray', 20)
+// let myCar = new Car('Tesla', 'Model S', 2019)
+// console.log(myCar)
+// console.log(typeof myCar.year)
+
+class Car {
+  constructor(make, model, year, color, mpg){
+     this.make = make,
+     this.model = model,
+     this.year = year,
+     this.color = color,
+     this.mpg = mpg
+  }
+} 
+//let myCar = new Car('Chevy', 'Astro', 1985, 'gray', 20)
+let myCar = new Car('Tesla', 'Model S', 2019)
+console.log(typeof myCar.year)
+console.log(myCar)
 
-//Try modifying or adding properties below.

classes/chapter-examples/ClassExamples02.js

@@ -10,8 +10,58 @@ class Astronaut {
    }
 }
 
-let tortoise = new Astronaut('Speedy', 120);
 
-console.log(tortoise.name, tortoise.age, tortoise.mass);
+// let tortoise = new Astronaut('Speedy', 120);
 
-// What happens if we call Astronaut and pass in MORE than 3 arguments? TRY IT!
+// console.log(tortoise.name, tortoise.age, tortoise.mass);
+
+// What happens if we call Astronaut and pass in MORE than 3 arguments? TRY IT!
+
+// Here we assign the method inside the constructor
+class AstronautI {
+  constructor(name, age, mass){
+     this.name = name;
+     this.age = age;
+     this.mass = mass;
+     this.reportStats = function() {
+        let stats = `${this.name} is ${this.age} years old and has a mass of ${this.mass} kg.`;
+        return stats;
+     }
+  }
+}
+
+// Here we assign the method outside of the constructor
+class AstronautO {
+  constructor(name, age, mass){
+     this.name = name;
+     this.age = age;
+     this.mass = mass;
+  }
+
+  reportStats() {
+     let stats = `${this.name} is ${this.age} years old and has a mass of ${this.mass} kg.`;
+     return stats;
+  }
+}
+
+let fox = new AstronautI('Fox', 7, 12);
+let hippo = new AstronautO('Hippo', 25, 1000);
+let bird = new Astronaut('Bird', 3, 7);
+
+console.log(fox);
+console.log(hippo);
+console.log(bird);
+
+class Plant {
+  constructor(type, height) {
+     this.type = type;
+     this.height = height;
+  }
+
+   grow()  {
+     this.height = this.height + 1;
+     let growth = `${this.type} is ${this.height}`;
+     return growth;
+  }
+}
+console.log(grow)

classes/exercises/ClassExercises.js

@@ -1,10 +1,56 @@
 // Define your Book class here:
+class Book {
+    constructor(title, author, copyright, ISBN, pages, checkedout, discarded){
+        this.title = title;
+        this.author = author;
+        this.copyright = copyright;
+        this.ISBN = ISBN;
+        this.pages = pages;
+        this.checkedout = checkedout;
+        this.discarded = discarded;
+    }
+    checkout(uses=1){
+        this.checkedout += uses;
+    }
+   
+}
+class Manual extends Book {
+    constructor(title, author, copyright, ISBN, pages, checkedout, discarded){
+        super(title, author, copyright, ISBN, pages, checkedout, discarded)
+    } 
+    dispose(currentYear){
+        if (currentYear-this.copyright > 5) {
+            this.discarded = "Yes";
+        }
+    }
+}
+class Novel extends Book {
+    constructor(title, author, copyright, ISBN, pages, checkedout, discarded){
+        super(title, author, copyright, ISBN, pages, checkedout, discarded)
+    }
+    dispose(checkedout){
+        if (this.checkedout > 100){
+            this.discarded = "yes";
+        } return checkedout
+    } 
+}
 
 
 // Define your Manual and Novel classes here:
 
 
 // Declare the objects for exercises 2 and 3 here:
+let myFav = new Book('Pride and Prejudice', 'Jane Austen', 1813,
+ '1111111111111', 432, 32, 'No')
 
+ let buildShip = new Manual('Top Secret Shuttle Building Manual', 'Redacted', 2013,
+ '0000000000000', 1147, 1, 'No')
 
+myFav.checkout(5);
+//myFav.dispose();
+console.log(myFav)
+
+buildShip.checkout(100);
+buildShip.dispose();
+console.log(buildShip)
 // Code exercises 4 & 5 here: