100. Creating SubClasses

Author: Max Kelly

oop/person.js

@@ -1,4 +1,5 @@
 // Prototypal Inheritance
+// myPerson --> Person.ptototype --> Object.prototype --> null 
 
 //---- Class Syntax -----
 // What makes the person class is the new way to create a constructor function. You define the constructor inside the class instead of inside the function. 
@@ -25,13 +26,67 @@ class Person {
   setName(fullName) {
         const names = fullName.split(" "); // This .split allows us to split a string and make an array. We're currently splitting on a space. This would create just Andrew
         this.firstName = names[0];
-        this.lastName = [1];
+        this.lastName = names[1];
     }
 }
+
+// The class Employee extends from Peron meaning we it has the same behaviour as person. This means we don't have to duplicate code.
+class Employee extends Person {
+    constructor (firstName, lastName, age, position, likes) {
+        super(firstName, lastName, age, likes) // Super allows you to call the functions in the Person constructor.
+        this.position = position 
+    }
+    getBio() {
+        // Max is a Helicopter Pilot
+        return `${this.firstName} ${this.lastName} is a ${this.position}.`
+    }
+    getYearsLeft() {
+        return 65 - this.age
+    }
+}
+
+class Student extends Person {
+  constructor(firstName, lastName, age, grade, classes, likes) {
+    super(firstName, lastName, age, likes);
+    this.grade = grade;
+    this.classes = classes;
+    }
+
+  updateGrades(number) {
+        this.grade += number
+    }
+
+  getBio() {
+        let status = `${this.firstName}`;
+        if (this.grade >= 70) {
+        status = `${this.firstName} is passing the test! Hooray! `;
+        } else {
+        status = `${this.firstName} is failing the test :(`;
+        }
+        return status;
+    }
+}
+
+
+// 1. Create a class for students
+// 2. Track student grade 0 - 100
+// 3. Override bio to print a passing or failing message. 70 and above "Andrew is passing the test"
+// 4. Create "UpdateGrade" that takes the amount to add or remove from the grade.
+
+// Create student 
+// Print status 
+// Change grade to change status.
+
+const me = new Student('Max', 'Kelly', 21, 10, 'English')
+console.log(me.getBio())
+me.updateGrades(+80);
+console.log(me.getBio())
+
 // ---------------------
 // The below creates a new person and logs it to the console. 
-const me = new Person('Max', 'Kelly', 21, ['surfing', 'SnowBoarding'])
-    me.setName('Andrew Smith')
-    console.log(me.getBio())
-const person2 = new Person('John', 'Boob', 29)
-    console.log(person2.getBio())
+// const me = new Employee('Max', 'Kelly', 21, 'Helicopter Pilot',['surfing', 'SnowBoarding'])
+//     me.setName('Andrew Smith')
+//     console.log(me.getBio())
+//     console.log(me.getYearsLeft())
+// const person2 = new Person('John', 'Boob', 29)
+//     console.log(person2.getBio())