switchMap in RxJS — a practical guide to RxJS switchMap with clear examples you can reuse in real projects.
Angular Tutorial Series (63/119). Prefer one article? Read the complete Angular tutorial.
Short description
Ideal for typeahead search and route-param driven fetches.
switchMap tip
this.route.paramMap.pipe(
switchMap((p) => this.api.get(p.get('id')!))
);