Why Use Public Methods In Javascript Objects Duplicate

When working with JavaScript objects, understanding the importance of using public methods is essential for efficient code duplication. Public methods provide a structured way to interact with an object's properties, enabling you to reuse code and improve the readability and maintainability of your codebase.

**What are Public Methods?**

In JavaScript, public methods are functions defined within an object that can be accessed and invoked from outside the object. These methods are declared within the object's scope, making them accessible to other parts of the codebase that have a reference to the object instance.

**Benefits of Using Public Methods**

1. **Code Reusability:** By encapsulating logic within public methods, you can reuse the same functionality across different parts of your application without duplicating code. This promotes a DRY (Don't Repeat Yourself) coding principle, reducing the risk of errors and making your codebase more maintainable.

2. **Encapsulation:** Public methods allow you to control how the object's properties are accessed and manipulated. By exposing only the necessary functions to interact with the object, you can ensure that the object's internal state is maintained properly, enhancing data integrity and security.

3. **Readability:** Well-defined public methods act as an interface to the object, providing a clear and concise way to understand how the object can be interacted with. This improves the readability of your code and makes it easier for other developers to understand and collaborate on the project.

**Preventing Code Duplication**

One common scenario where public methods are particularly useful is in preventing code duplication when working with multiple instances of an object. Instead of writing similar code for each instance, you can define public methods that encapsulate the shared functionality, making it easier to maintain and update the code in the future.

For example, consider a `Car` object with properties such as `make`, `model`, and `color`. By defining public methods like `drive` and `park`, you can ensure that the logic for these actions is centralized within the object, reducing the need to duplicate code for every `Car` instance you create.

**Example Usage**

function Car(make, model, color) {
  this.make = make;
  this.model = model;
  this.color = color;
  
  this.drive = function() {
    console.log(`Driving the ${this.color} ${this.make} ${this.model}`);
  };
  
  this.park = function() {
    console.log(`Parking the ${this.color} ${this.make} ${this.model}`);
  };
}

const myCar = new Car('Toyota', 'Camry', 'blue');
myCar.drive();
myCar.park();

In this example, the `Car` object has public methods `drive` and `park` that encapsulate the actions of driving and parking the car. By using these public methods, you can easily interact with the `Car` object and avoid duplicating code for other car instances.

**Conclusion**

In conclusion, utilizing public methods in JavaScript objects is a best practice for reducing code duplication, promoting code reusability, enhancing encapsulation, and improving code readability. By structuring your objects with well-defined public methods, you can write more maintainable and efficient code that is easier to work with and collaborate on.