Angular 2路由器事件监听器

新路由器

constructor(router:Router) {  router.events.subscribe(event:Event => {    if(event instanceof NavigationStart) {    }    // NavigationEnd    // NavigationCancel    // NavigationError    // RoutesRecognized  });}

旧

注入路由器并订阅路由更改事件

import {Router} from 'angular2/router';class MyComponent {  constructor(router:Router) {    router.subscribe(...)  }}

注意

对于新路由器，请不要忘记

NavigationStart

router

import { Router, NavigationStart } from '@angular/router';

因为如果不导入，

instanceof

NavigationStart is not defined