Using Angular Signals

A signal is a reactivity primitive that keeps track of its value changing over time. Angular Signals implements this primitive to granularly sync the application state with the DOM. By focusing on granular changes in state and only the relevant DOM nodes, the number and severity of change detection operations are significantly reduced. As covered in Chapter 1, Angular’s Architecture and Concepts, change detection is one of the most expensive operations that the Angular framework performs. As an app grows in complexity, change detection operations may be forced to traverse or update larger parts of the DOM tree. As the number of interactive elements increases in your app, change detection events occur more frequently. App complexity combined with the frequency of events can introduce significant performance issues, resulting in slow or choppy rendering of the app. Usually, there’s no quick fix for a problem like this. So, it is critical to understand...