What are the main Backbon.js native components ?

Backbone.js is a popular JavaScript library that provides a structured framework for building web applications. One of its key features is its set of native components, which provide a solid foundation for building complex, interactive applications. 

Some of the most important native components of Backbone.js include:

Model: The model is the basic building block of any Backbone.js application, representing a single entity of data in the application. Models can be created and manipulated through a simple, easy-to-use API, and can be used to store and retrieve data from a database, or to connect to a RESTful web service. Models also have built-in support for events, which can be used to notify other parts of the application when data changes.

Collection: A collection is a group of models that can be used to represent a set of data, such as a list of products or a list of users. Collections provide an easy way to manage large sets of data and can be used to filter and sort the data in various ways. They also have built-in support for events, allowing other parts of the application to be notified when the data changes.

View: The view is the component that connects the model and collection to the user interface. Views are responsible for displaying the data and handling user interactions, such as button clicks and form submissions. They can be used to create complex, interactive user interfaces, such as lists and forms, and can be reused across multiple parts of the application.

Router: The router is responsible for handling the client-side routing of the application. It allows you to define specific URLs for different parts of the application, and to map those URLs to specific views or actions. The router can be used to create Single-Page Applications (SPAs) with multiple pages and can handle browser navigation such as the back and forward buttons.

Event: Backbone.js natively supports events, making it easy for different components of the application to communicate with each other. When an event is triggered, the corresponding callback function is executed and the event is passed to the listener.

Syncing: Backbone.js natively supports syncing with a server. The sync method is called automatically by the Backbone.Model.save() and Backbone.Collection.fetch() methods, and also when a new model is created, it provides an easy way to save and retrieve data from a server.

Utility: Backbone.js provides a utility function to extend, clone, and other functionality to objects, and also parse parameters or options passed to the main object.

Overall, the native components of Backbone.js provide a solid foundation for building complex, interactive web applications. They are powerful, yet easy to use, and can be used to build a wide variety of different types of applications. They are also well-documented and widely supported by the development community, making them an excellent choice for any web development project.