Introduction In Angular, there are a few ways to render templates and components dynamically. There is ngTemplateOutlet that can render different instances of ng-template conditionally. When we use components, we can apply ngComponentOutlet to render the dynamic components the simple way or ViewContainerRef the complex way. In this…
Introduction This post wants to illustrate how to use switchMap operator to cancel previous HTTP requests and retrieve the latest Pokemon by an id. It is an important technique to preserve scarce network resource on a device such as mobile phone that has limited data plan. It also improves performance…
Introduction This post wants to illustrate how powerful RxJS is when building a reactive user interface in Angular. The application is consisted of a group of buttons that can increment and decrement Pokemon id. When button click occurs, the observable emits the new id and renders the images…
Introduction This is day 20 of Wes Bos’s JavaScript 30 challenge where I build a speech detection application using RxJS, Angular standalone components and Web Speech API. Angular not only can call it’s own APIs to render components but it can also interact with Web Speech API to…