exercises

Author: vsangui2

classes/chapter-examples/ClassExamples02.js

@@ -3,7 +3,7 @@
 // Next, set default values for 1 or more of the parameters in constructor.
 
 class Astronaut {
-   constructor(name, age, mass){
+   constructor(name, age, mass = 54){
      this.name = name;
      this.age = age;
      this.mass = mass;
@@ -12,6 +12,8 @@ class Astronaut {
 
 let tortoise = new Astronaut('Speedy', 120);
 
-console.log(tortoise.name, tortoise.age, tortoise.mass);
+let mrMouse = new Astronaut('Gonzalez', 15, .0001);
+
+console.log(tortoise, mrMouse);
 
 // What happens if we call Astronaut and pass in MORE than 3 arguments? TRY IT!

classes/exercises/ClassExercises.js

@@ -1,10 +1,48 @@
 // Define your Book class here:
-
-
+class Book {
+    constructor(title, author, copyright, isbn, pages, timesCheckedOut, discarded){
+       this.title = title;
+       this.author = author;
+       this.copyright = copyright;
+       this.isbn = isbn;
+       this.pages = pages;
+       this.timesCheckedOut = timesCheckedOut;
+       this.discarded = discarded;
+    }
+ 
+    checkout(uses=1) {
+       this.timesCheckedOut += uses;
+    }
+}
 // Define your Manual and Novel classes here:
 
-
+class Manual extends Book {
+    constructor(title, author, copyright, isbn, pages, timesCheckedOut, discarded){
+       super(title, author, copyright, isbn, pages, timesCheckedOut, discarded);
+    }
+ 
+    dispose(currentYear){
+       if (currentYear-this.copyright > 5) {
+          this.discarded = 'Yes';
+       }
+    }
+ }
+ 
+ class Novel extends Book {
+    constructor(title, author, copyright, isbn, pages, timesCheckedOut, discarded){
+       super(title, author, copyright, isbn, pages, timesCheckedOut, discarded);
+    }
+ 
+    dispose(){
+       if (this.timesCheckedOut > 100) {
+          this.discarded = 'Yes';
+       }
+    }
+ }
 // Declare the objects for exercises 2 and 3 here:
+let englishBook = new Novel("Pride and Prejudice", "Jane Austen", 1813, 1111111111111, 432, 32, "No");
+let buildingManual = new Manual("Top Secret Shuttle Building Manual", "Redacted", 2013, 0000000000000, 1147, 1, "No");
 
-
-// Code exercises 4 & 5 here:
+// Code exercises 4 & 5 here:
+goodRead.checkout(5);
+goodRead.dispose(2023);