Mastering JavaScript: Combining Constructor Functions and Prototypes

Unlock the Power of Reusable Objects with Constructor Functions and Prototypes

Photo by Riccardo Nestola on Unsplash

In the world of JavaScript, one of the fundamental concepts you’ll encounter is the use of constructor functions and prototypes. These powerful tools allow you to create reusable objects and share methods and properties across multiple instances.

In this article, we’ll dive into the intricacies of combining constructor functions and prototypes to write efficient and maintainable code.

Understanding Constructor Functions

A constructor function is a regular function that is used to create new objects. It’s typically capitalized to distinguish it from other functions. Here’s an example:

function Person(name, age) {
  this.name = name;
  this.age = age;
}

const john = new Person('John', 30);
console.log(john.name); // Output: 'John'
console.log(john.age); // Output: 30

In this example, the Person function is a constructor function that takes two parameters, name and age, and assigns them to the object's properties using the this keyword. When we create a new Person object using the new keyword, the constructor function is called, and a new object is…