- Architecture: AngularJS follows the Model-View-Controller (MVC) architecture. It separates the application logic (Model), the presentation layer (View), and the interaction layer (Controller). ReactJS follows a component-based architecture, where the application is divided into reusable components. Each component manages its own state, and the components are combined to build the user interface.
- Performance: ReactJS is known for its performance optimizations. It uses a virtual DOM (Document Object Model) that allows it to efficiently update only the necessary parts of the user interface, resulting in faster rendering and improved performance. AngularJS, on the other hand, relies on two-way data binding, which can sometimes impact performance, especially in complex applications with large data sets.
- Community and Ecosystem: Both AngularJS and ReactJS have large and active communities of developers. However, ReactJS has gained significant popularity in recent years, with many big companies adopting it for their projects. ReactJS also has a vast ecosystem of libraries, tools, and resources that can aid in development. AngularJS, being an older framework, has a mature ecosystem with a wide range of third-party libraries and resources.
- Data Binding: One of the major differences between AngularJS and ReactJS is how they handle data binding. AngularJS uses two-way data binding, where changes in the model automatically update the view, and changes in the view update the model. ReactJS, on the other hand, uses one-way data binding. It provides a unidirectional data flow, where data flows from parent components to child components, and any changes in the child components are communicated through callbacks.
- Component Reusability: ReactJS promotes component reusability and encourages developers to create modular components that can be easily reused across different parts of the application. AngularJS also supports component-based development, but it has a more opinionated approach with the use of directives and controllers.
- Popularity and Industry Adoption: Both AngularJS and ReactJS are widely used in the industry, but ReactJS has seen significant growth and adoption in recent years. Many large companies, including Facebook, Instagram, Airbnb, and Netflix, have embraced ReactJS for their web applications. AngularJS, being an older framework, still has a strong presence and is used by companies like Google, Microsoft, and IBM.