Pro Angular 16

10 Angular reactivity and signals

This chapter covers

• Understanding the way that Angular responds to changes
• Using the new Angular Signals feature to describe data relationships
• Using writable signals and computed signals for efficient change detection
• Using signals with observable sequences of values

In this chapter, I explain how Angular responds to changes in the application state to update the HTML presented to the user. I describe the approach that Angular has conventionally used and introduce a new feature, called signals, which can be used to make dealing with changes more efficient. Table 10.1 puts data and reactivity in context.

Table 10.1. Putting reactivity in context

Question	Answer
What is it?	Change detection ...