Course Content

Advanced JavaScript Mastery

1. Mastering JavaScript Classes and Inheritance

Getting Started Understanding Class Declarations in JavaScript Challenge: Create a JavaScript Class Defining Methods in JavaScript Classes Challenge: Add Methods to a Class Using Parameter Objects Working with Private Properties in Classes Challenge: Implement Private Properties in a Class Managing Properties with Getters and Setters Challenge: Implement Getters and Setters in a Class Exploring Static Properties in JavaScript Using Static Methods in JavaScript Challenge: Implement Static Properties and Methods in a Class Understanding Inheritance with extends and super()Challenge: Implement Class Inheritance with extends and super()

2. DOM Manipulation for Interactive Web Development

What Is the Document Object Model (DOM)?Querying and Selecting Elements in the DOM Challenge: Query and Select DOM Elements Understanding the DOM Hierarchy and Relationships Challenge: Navigate the DOM Hierarchy Exploring DOM Properties in JavaScript Working with Element Attributes in the DOM Challenge: Manage Element Properties and Attributes Adding Elements to the DOM Dynamically Removing Elements From the DOM Challenge: Add and Remove DOM Elements Modifying Element Styles with JavaScript Challenge: Apply Dynamic Styles to DOM Elements

3. Event Handling and User Interactions in JavaScript

Introduction to Events and Event Listeners Understanding the Event Object in JavaScript Challenge: Implement Event Listeners Event Propagation and Delegation Explained Challenge: Handle Event Propagation and Delegation Working with Keyboard and Mouse Events Managing and Removing Event Listeners

4. Asynchronous JavaScript and API Integration

Introduction to Asynchronous JavaScript Understanding Callbacks in JavaScript Handling Asynchronous Operations with Promises Using Async/Await for Cleaner Asynchronous Code Fetching and Working with APIs in JavaScript Integrating APIs in JavaScript Applications Challenge: Fetch and Use API Data Integrating Third-Party Libraries in JavaScript Challenge: Work with Third-Party Libraries Handling Multiple Asynchronous Requests

Challenge: Implement Class Inheritance with extends and super()

Task

You're working on a transportation management system that tracks different types of vehicles. Each vehicle has a make, model, and year. For electric vehicles, you also need to track the batteryCapacity. You'll use inheritance to extend a general Vehicle class for specific electric vehicles.

Create an ElectricVehicle class that extends Vehicle;
The ElectricVehicle constructor should accept make, model, year, and batteryCapacity;
Use super() to initialize make, model, and year in the parent class;
Add a getDetails method to ElectricVehicle that overrides Vehicle's getDetails method. It should call super.getDetails() and add information about batteryCapacity. The format should be: "{make} {model} ({year}) with a battery capacity of {batteryCapacity} kWh.".


              12345678910111213141516171819202122232425262728293031
            
class Vehicle {
  constructor(make, model, year) {
    this.make = make;
    this.model = model;
    this.year = year;
  }

  getDetails() {
    return `${this.make} ${this.model} (${this.year})`;
  }
}

class ElectricVehicle _____ _____ {
  _____(make, model, year, _____) {
    _____(_____, _____, _____);
    this.batteryCapacity = batteryCapacity;
  }

  _____() {
    return `${super._____} with a battery capacity of ${
      _____._____
    } kWh.`;
  }
}

// Testing
const vehicle = new Vehicle('Toyota', 'Camry', 2020);
console.log(vehicle.getDetails()); // Expected: Toyota Camry (2020)

const electricVehicle = new ElectricVehicle('Tesla', 'Model 3', 2021, 75);
console.log(electricVehicle.getDetails()); // Expected: Tesla Model 3 (2021) with a battery capacity of 75 kWh.

Define a class ElectricVehicle that extends Vehicle;
In the ElectricVehicle constructor, add a parameter batteryCapacity after make, model, and year;
Use super(make, model, year) to call the parent class's constructor and initialize make, model, and year;
Assign batteryCapacity to a property in ElectricVehicle;
Define a getDetails method in ElectricVehicle that overrides Vehicle's getDetails method;
Inside getDetails, use super.getDetails() to get the parent class details, then add the battery capacity information to the return string.


              12345678910111213141516171819202122232425262728293031
            
class Vehicle {
  constructor(make, model, year) {
    this.make = make;
    this.model = model;
    this.year = year;
  }

  getDetails() {
    return `${this.make} ${this.model} (${this.year})`;
  }
}

class ElectricVehicle extends Vehicle {
  constructor(make, model, year, batteryCapacity) {
    super(make, model, year);
    this.batteryCapacity = batteryCapacity;
  }

  getDetails() {
    return `${super.getDetails()} with a battery capacity of ${
      this.batteryCapacity
    } kWh.`;
  }
}

// Testing
const vehicle = new Vehicle('Toyota', 'Camry', 2020);
console.log(vehicle.getDetails()); // Output: Toyota Camry (2020)

const electricVehicle = new ElectricVehicle('Tesla', 'Model 3', 2021, 75);
console.log(electricVehicle.getDetails()); // Output: Tesla Model 3 (2021) with a battery capacity of 75 kWh.

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 15