JavaScript Classes & Methods Homework

Classes & Methods Homework

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Homework!

As you read through this, notice the new content introduced. We encourage you to do your own research (this can be Google, ChatGPT, documentation, etc.). Here, we introduce the _ property (memory safety), extends keyword, and super() method.

To complete the homework, implement the TODO: comments. The example usage should guide you and work if all implementation is done correctly. Have fun!

If anything simply cannot go wrong, it will anyway.

%%js

class Aircraft {
    // Constructor
    constructor(model, capacity, range) {
        this._model = model; // _model is a convention to indicate that it's a private property
        this._capacity = capacity; // _capacity is a convention to indicate that it's a private property
        this._range = range; // _range is a convention to indicate that it's a private property
    }

    // Getter for model
    get model() {
        return this._model;
    }

    // Setter for model
    set model(newModel) {
        this._model = newModel;
    }

    // Getter for capacity
    get capacity() {
        return this._capacity;
    }

    // Setter for capacity
    set capacity(newCapacity) {
        this._capacity = newCapacity;
    }

    // Getter for range
    get range() {
        // TODO: get the range
        return this._range
    }

    // Setter for range
    set range(newRange) {
        // TODO: set the range
        this._range=newRange
    }

    // Method to display aircraft details
    displayDetails() {
        // TODO: display the details (model, capacity, range)
        console.log("Model: " + this._model)
        console.log("Capacity: " + this._capacity)
        console.log("Range: " + this._range)
    }

    // Static method to compare range
    static compareRange(aircraft1, aircraft2) {
        return aircraft1.range - aircraft2.range;
    }
}

// Example usage
let boeing = new Aircraft('Boeing 747', 416, 13800);
let airbus = new Aircraft('Airbus A380', 853, 15700);

console.log(boeing.displayDetails());
console.log(airbus.displayDetails());
console.log(`Range difference: ${Aircraft.compareRange(boeing, airbus)} km`);

// New content in the HW! Lo and behold, the FighterJet class! 
// For 1) do research. What does the extend keyword do in JavaScript?
// Here's a quick rundown if you're in a hurry: 
// the extends keyword creates a child class (FighterJet) that inherits from a parent class (Aircraft).
class FighterJet extends Aircraft {
    constructor(model, capacity, range, speed) {
        super(model, capacity, range); // We call the parent class constructor with super
        this._speed = speed;
    }

    // TODO: Getter for speed
    // Remember to use the _speed property for memory safety

    getSpeed(){
        return this._speed;
    }

    // TODO: Setter for speed
    // Remember to use the _speed property and add a function paramater.

    setSpeed(newSpeed){
        this._speed=newSpeed
    }

    // TODO: Method to display fighter jet details (model, capacity, range, speed)
    displayDetails() {
        super.displayDetails()
        console.log("Speed: " + this._speed)
    }
}

// Example usage
let f16 = new FighterJet('F-16', 1, 4220, 2400);
let f22 = new FighterJet('F-22', 1, 2960, 2410);

console.log(f16.displayDetails());
console.log(f22.displayDetails());
console.log(`Range difference: ${Aircraft.compareRange(f16, f22)} km`);

<IPython.core.display.Javascript object>

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