How to Use Classes in JavaScript to Write Better Code

If you’re a JavaScript developer, you probably know how important it is to write clean, efficient, and maintainable code. But you also know how challenging it can be to achieve that, especially when you have to deal with complex data and functionality. That’s where classes come in. Classes are a powerful feature of JavaScript that allow you to create reusable code templates that you can use to create new objects with similar properties and methods. This means you don’t have to write out the same code over and over again, saving you time and reducing the chances of errors creeping into your code. But how do you use classes in JavaScript?

How to Create and Use Classes in JavaScript

In most cases, there are situations where you, as a programmer, need to build many objects that have a specific set of properties and methods. For example, you might need to build hundreds of car objects for a car racing game. To code this efficiently, we use classes, which are essentially a blueprint that lets you use the same code to build new objects of the same kind, as many times as you like.

In JavaScript a class is build using the class keyword, followed by the name of the class starting with a capital letter and a pair of curly braces. Inside the curly braces, you have the constructor function which accepts as many parameters as needed. The role of the constructor is to assign the passed in parameters to the future object’s properties. It is the constructor function that is used when instantiating new objects, instances of a given class. After the constructor is defined, you add as many methods as you want.

Note, you do not use the function keyword in classes, just the name of the method is needed.

Conclusion

Classes are a powerful feature of JavaScript that allow you to create reusable code templates that you can use to create new objects with similar properties and methods. By using classes and the ‘this’ keyword, you can write more modular and maintainable code.

Now it’s your turn to practice and apply what you learned. Try to create some classes and objects in JavaScript and see how they work. If you have any questions or feedback, feel free to leave a comment below. And if you liked this post, please share it with your friends and colleagues who might find it useful. Thanks for reading!