我在新的Angular 2路由器中看到这些新的事件.
Theres NavigationStart,NavigationEnd,NavigationFailed(或类似的东西)
有人知道如何使用这些吗？我已经搞砸了几件事,但是还是无法让他们做任何事情.
路由器提供可以订阅的事件observable
constructor(router:Router) {
router.events.subscribe(event:Event => {
if(event instanceof NavigationStart) {
}
// NavigationEnd
// NavigationCancel
// NavigationError
// RoutesRecognized
}
}
也可以看看
> https://angular.io/docs/ts/latest/api/router/index/Router-interface.html
> https://angular.io/docs/ts/latest/api/router/index/NavigationStart-class.html
> https://angular.io/docs/ts/latest/api/router/index/NavigationEnd-class.html
> @L_502_3@
> https://angular.io/docs/ts/latest/api/router/index/NavigationError-class.html
> https://angular.io/docs/ts/latest/api/router/index/RoutesRecognized-class.html
注意
不要忘记从路由器模块导入NavigationStart
import { Router,NavigationStart } from '@angular/router';
因为如果不导入它,instanceof将不起作用,并且未定义的NavigationStart错误将会上升.
