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() {
        return this._range;
    }
    // Setter for range
    set range(newRange) {
        this._range = newRange;
    }
    // Method to display aircraft details
    displayDetails() {
        return `Model: ${this._model}, Capacity: ${this._capacity}, Range: ${this._range} km`;
    }
    // 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!
// 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; // _speed is a private property
    }
    // Getter for speed
    get speed() {
        return this._speed;
    }
    // Setter for speed
    set speed(newSpeed) {
        this._speed = newSpeed;
    }
    // Method to display fighter jet details (model, capacity, range, speed)
    displayDetails() {
        return `Model: ${this._model}, Capacity: ${this._capacity}, Range: ${this._range} km, Speed: ${this._speed} km/h`;
    }
}
// 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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If you perceive that there are four possible ways in which a procedure can go wrong, and circumvent these, then a fifth way, unprepared for, will promptly develop.

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