What is RenderTree in Blazor?

While developing components in Blazor and using some bindings, we don’t update the DOM directly. Between our components and the DOM, Blazor creates an in-memory programmatic lightweight object called RenderTree that represents the current DOM’s state.

Due to the nature of RenderTree as a C# object, it’s easy to manipulate its state and content instead of manipulating the DOM directly, because in SPAs, the process of manipulating the DOM is heavy and complex. When a change occurs in the app and it requires the UI to be updated, Blazor updates the state of RenderTree and then compares the updated status with the original one using an advanced diffing algorithm. The algorithm is responsible for identifying the differences between the original state and the new one in an efficient manner. This all happens in RenderTree, rather than in the DOM directly, taking only the differences and applying only what has changed to the DOM, which...