Intermediate

Angular Signals

The signal-based reactivity model — creating, reading, computed signals and fetching data.

A signal is a container that holds a value. Unlike a regular variable, a signal notifies its consumers when its value changes.

💡 Metaphor: think of a signal as a light box. You put a value in the box. When the value changes, the box lights up — that is the change notification.

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What's inside

7 sections
  1. 1 Table of Contents
  2. 2 The What and Why of Signals
  3. 3 Creating and Reading Signals
  4. 4 computed() and linkedSignal()
  5. 5 Fetching Data into a Signal
  6. 6 Fetching Data Reactively
  7. 7 Quick Reference for Signals APIs

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