- In angular this is also present as a class in the html tag.

- In Angular, hydration refers to the process of converting theserver_side_HTML content into a fully functional client-side application. When a user loads a web page, the server sends an HTML file containing static content to the client. However, for dynamic web applications built using Angular, the client needs to be able to render the dynamic content, handle user interactions, and perform other tasks.
- During hydration, Angularcompiles_templates,bind_data to the components, and creates the necessary runtime environment for the application to work properly. The hydrated application then takes over the static content provided by the server and makes it interactive, allowing the user to interact with the application in real-time.