JavaScript Factory Functions

• Creating Objects: Factory functions are a simple way to create multiple objects with similar properties and methods.

• How They Work:

  • A factory function is a regular JavaScript function that returns an object.
  • The function takes any necessary arguments to customize the object’s properties.

• Example:

  JavaScript

   

  function createPerson(firstName, lastName) {
    return {
      firstName: firstName,
      lastName: lastName,
      fullName: function() {
        return this.firstName + " " + this.lastName;
      }
    };
  }
  
  const person1 = createPerson("John", "Doe");
  const person2 = createPerson("Jane", "Smith");
  

• Benefits:

  • Code Reusability: Avoids repetitive code when creating multiple objects with similar structures.
  • Flexibility: Easily customize object properties by passing different arguments to the function.

• Comparison to Classes:

  • Factory functions provide a simpler and more concise way to create objects compared to using classes, especially for simpler use cases.

In essence, factory functions offer a clean and efficient way to create multiple instances of objects with shared characteristics, making your code more organized and maintainable.