TacettinSertkaya

  <img src="small.jpg" srcset="small.jpg 480w, medium.jpg 800w, large.jpg 1200w" sizes="(max-width: 600px) 480px, (max-width: 900px) 800px, 1200px" alt="Responsive image" >

  this.searchTerms.pipe( debounceTime(300), // Wait 300ms after each keystroke distinctUntilChanged(), // Ignore if the next search term is the same as the previous switchMap((term: string) => this.searchService.search(term)), ).subscribe();

 https://www.freecodecamp.org/news/how-to-build-an-event-app-with-node-js/