Challenge: Implement Getters and Setters in a Class
Task
You are working within a Car
class that has a private #mileage
property. Your task is to define getters and setters for this property to control how it’s accessed and modified.
- Define Getter for Mileage: Define a getter for the
mileage
property to retrieve the current mileage; - Define Setter for Mileage with Validation: Define a setter for the
mileage
property that accepts a new mileage value. This setter should:- Only allow updating if the new mileage is greater than the current mileage (mileage can only increase);
- If the new mileage is invalid, log
"Invalid mileage update"
and do not change the current mileage.
123456789101112131415161718192021222324252627class Car { #mileage = 1000; // Initial private mileage // Getter for mileage _____ mileage() { return this.#_____; } // Setter for mileage with validation _____ mileage(newMileage) { _____ (_____ > this.#_____) { this.#_____ = newMileage; } _____ { console.log(_____); } } } // Testing const car1 = new Car(); console.log(car1.mileage); // Expected: 1000 car1.mileage = 1500; // Update mileage to 1500 console.log(car1.mileage); // Expected: 1500 car1.mileage = 900; // Attempt invalid mileage update, expected: Invalid mileage update
- Define a
get
accessor formileage
to retrieve the current mileage; - Define a
set
accessor formileage
that takesnewMileage
as a parameter; - In the setter, check if
newMileage
is greater than the current mileage (this.#mileage
); - If
newMileage
is valid, update#mileage
tonewMileage
; - If
newMileage
is not greater than the current mileage, log"Invalid mileage update"
and do not change the mileage.
123456789101112131415161718192021222324252627class Car { #mileage = 1000; // Initial private mileage // Getter for mileage get mileage() { return this.#mileage; } // Setter for mileage with validation set mileage(newMileage) { if (newMileage > this.#mileage) { this.#mileage = newMileage; } else { console.log('Invalid mileage update'); } } } // Testing const car1 = new Car(); console.log(car1.mileage); // Output: 1000 car1.mileage = 1500; // Update mileage to 1500 console.log(car1.mileage); // Output: 1500 car1.mileage = 900; // Attempt invalid mileage update, expected: Invalid mileage update
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Sektion 1. Kapitel 10
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Challenge: Implement Getters and Setters in a Class
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Task
You are working within a Car
class that has a private #mileage
property. Your task is to define getters and setters for this property to control how it’s accessed and modified.
- Define Getter for Mileage: Define a getter for the
mileage
property to retrieve the current mileage; - Define Setter for Mileage with Validation: Define a setter for the
mileage
property that accepts a new mileage value. This setter should:- Only allow updating if the new mileage is greater than the current mileage (mileage can only increase);
- If the new mileage is invalid, log
"Invalid mileage update"
and do not change the current mileage.
123456789101112131415161718192021222324252627class Car { #mileage = 1000; // Initial private mileage // Getter for mileage _____ mileage() { return this.#_____; } // Setter for mileage with validation _____ mileage(newMileage) { _____ (_____ > this.#_____) { this.#_____ = newMileage; } _____ { console.log(_____); } } } // Testing const car1 = new Car(); console.log(car1.mileage); // Expected: 1000 car1.mileage = 1500; // Update mileage to 1500 console.log(car1.mileage); // Expected: 1500 car1.mileage = 900; // Attempt invalid mileage update, expected: Invalid mileage update
- Define a
get
accessor formileage
to retrieve the current mileage; - Define a
set
accessor formileage
that takesnewMileage
as a parameter; - In the setter, check if
newMileage
is greater than the current mileage (this.#mileage
); - If
newMileage
is valid, update#mileage
tonewMileage
; - If
newMileage
is not greater than the current mileage, log"Invalid mileage update"
and do not change the mileage.
123456789101112131415161718192021222324252627class Car { #mileage = 1000; // Initial private mileage // Getter for mileage get mileage() { return this.#mileage; } // Setter for mileage with validation set mileage(newMileage) { if (newMileage > this.#mileage) { this.#mileage = newMileage; } else { console.log('Invalid mileage update'); } } } // Testing const car1 = new Car(); console.log(car1.mileage); // Output: 1000 car1.mileage = 1500; // Update mileage to 1500 console.log(car1.mileage); // Output: 1500 car1.mileage = 900; // Attempt invalid mileage update, expected: Invalid mileage update
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Sektion 1. Kapitel 10