While Angular 2 usually uses event handlers to manage events and RxJS typically uses Observable.fromEvent, a good practice when using Angular 2 and RxJS combined is to use Subjects and push the value through each event so that you can use it as part…
Google TestExtending Google Test by Handling Test Events Google测试提供了一个事件侦听器API,让您接收有关测试程序进度和测试失败的通知. 可以监听的事件包括测试程序的开始和结束,测试用例或测试方法等. 您可以使用此API来扩充或替换标准控制台输出,替换XML输出,或提供完全不同的输出形式,例如GUI或数据库. 例如,您还可以使用测试事件作为检查点来实现资源泄漏检查器. 一.定义事件侦听器 要定义一个事件监听器,你需要继承testin…
So far we only had effects that write something to the external world, we are not yet reading anything from the external world into our app. This lesson shows how we can change the DOM Driver to return a "DOM Source" representing read effects, s…
A @Directive can also listen to events on their host element using @HostListener. This allows you to add behaviors that react to user input and update or modify properties on the element without having to create a custom component. import {Directive,…
Observable.merge allows you take two different source streams and use either one of them to make changes to the same state of your data. This lesson shows how you can use a stream of clicks and an interval stream and use either one to update the cloc…
In our root component, one thing we can do is subscribe to Router events, and do something related to router events. So how can we get router event? export class AppComponent implements OnInit { constructor(private router: Router) {} ngOnInit() { thi…
