Angular Form Validation

on YouTube ↗22m

" summary

Shows concrete claim: reactive forms use sync validators first then async validators, and a custom minimum-bid async validator checks server-side latest bid and returns an error map. Demo uses the CLI, ReactiveFormsModule, Material for layout and AngularFire/firebase for a push-based stream; validator chains use an observable selector/let operator so validation order and pending behavior are replaceable. Live demo posts and receives real-time updates and the examples compile and run.

AI-written summary · about

" chapters (6)

1. 0:00Start
2. 1:38build your own custom validators
3. 3:48set up basic validation
4. 6:34create dibs for errors
5. 8:26add an error
6. 20:04connect us up to the firebase database

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