Start making restful API requests from Angular 4.3+ with the new HTTP client. In this lesson, I show you how to make GET and POST requests, set URL params, headers, handle errors, and more. https://angularfirebase.com/lessons/http-with-angular-quick-start/
StackBlitz Demo: https://stackblitz.com/edit/http-basics
Angular HTTP: https://angular.io/guide/http
JSON Placeholder: https://jsonplaceholder.typicode.com/
Swagger Codegen: https://swagger.io/