The Angular Reactivity Momentum in a Nutshell
summary
Angular 20 introduces new control flow, Angular signals, and deferred views with concrete claims: community benchmarks show structural directives doing ~1.5ms vs control flow ~0.8ms (~45% faster), deferred views support onIdle/onHover/interaction/viewport triggers plus prefetch and conditional unload, and signals enable zoneless change detection when polyfills are removed and provideZoneless is enabled. Migration requires converting template-bound state to signals, avoids mixing ordinary variables (shows lazy computed-tracking pitfalls that produce wrong results), and demands careful review for large apps.
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chapters (12)
- 0:00Introduction
- 1:06Angular reactivity initiative
- 2:09New control flow in Angular
- 5:01Deferred views vs lazy loading
- 11:17Change detection with Zone.js
- 16:12Angular Signals solution
- 23:51Writable vs computed signals
- 25:38Effects and side effects
- 28:24Signal queries and hooks
- 33:18Signals with Angular forms
- 35:48Migrating to zoneless
- 36:56Q&A
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