Как написать функцию на JavaScript, которая будет делать то же самое?

Для того чтобы создать функцию, которая будет вызываться через точку, вам необходимо добавить эту функцию в прототип объекта, к которому хотите применить эту функцию.

Вот пример, как вы можете создать свою функцию rotateAndJump, которая будет вызываться через точку:

```javascript
// Создаем функцию rotateAndJump
function rotateAndJump() {
  // Ваш код для функции rotateAndJump
  console.log("rotateAndJump функция вызвана");
}

// Добавляем функцию в прототип объекта
Object.prototype.rotateAndJump = rotateAndJump;

// Создаем элемент
var elem = {};

// Вызываем функцию rotateAndJump через точку
elem.rotateAndJump(); // Выведет "rotateAndJump функция вызвана"
```

Теперь вы можете вызывать функцию rotateAndJump через точку для любого объекта, включая элементы DOM.

JavaScript Reference: Classes

1. Use classes in JavaScript to define object blueprints and create multiple instances of similar objects with shared properties and methods.

2. Classes provide a clean and organized way to structure and manage code by encapsulating related data and behavior within a single entity.

3. When creating a class, consider the properties and methods that are essential for its functionality, and define them accordingly.

4. Use meaningful names for your classes and their members to enhance code readability and maintainability.

5. Take advantage of inheritance in JavaScript classes to create hierarchical relationships between classes and reuse common functionality.

6. Encapsulate the internal state of a class by defining private variables and methods, and expose only the necessary public APIs for interaction.

7. Utilize class constructors to set initial values for object properties or perform any necessary setup tasks when a new instance is created.

8. Leverage class inheritance and the super keyword to extend the functionality of a base class and override specific methods as needed.

9. Implement class getters and setters to control access to object properties and add additional logic or validation when interacting with them.

10. Use static class methods to define utility functions or operations that can be called without creating an instance of the class.

11. When working with classes, aim for code that is modular, reusable, and easy to understand, making it efficient to maintain and update in the future.

12. Stay updated with the latest JavaScript features and best practices for working with classes to write more efficient and effective code.