Learn how to use `class` syntax to create objects with the same structure, initialize properties through a constructor and encapsulate behavior inside instance methods.
Use classes when you need several entities with the same data and behavior.
If you only have one configuration object, a literal object is usually enough. If you need many projects, users, tasks or products, a class reduces repetition and makes the contract easier to read.
A class also helps keep data and behavior together, which makes maintenance easier when the feature grows.
The constructor initializes each instance with the data it needs.
The `constructor` runs automatically when you call `new ClassName(...)`. That is where you assign the initial properties with `this`.
Every call to `new` creates an independent object, even when all of them come from the same class.
A method reads or changes the state of one specific instance.
Inside a method, `this` points to the instance that runs it. That is why `landing.toggleFavorite()` only changes `landing` and not the rest.
This pattern avoids duplicating external helper functions that always need the same object passed in as an argument.