我有几个链接导航为
http://localhost:4200/#/forward/services/our-services?category=1
http://localhost:4200/#/forward/services/our-services?category=2
http://localhost:4200/#/forward/services/our-services?category=3
我想获取类别
的值我试过
this.sub = this._activatedRoute.params.subscribe(params => {
this.category = + params['category'];
console.log(params['category']);
});
console.log()只打印一次,
如何确保在类别值发生变化时捕获
这就是用于导航的内容
<ul id="menu-services-menu" class="menu" *ngFor="let category of categories">
<li><a routerLinkActive="active" [routerLink]="['/forward/services/our-services']" [queryParams]="{ category: category.category }" >{{category.category}}</a></li>
</ul>
答案 0 :(得分:4)
constructor(router:Router, route:ActivatedRoute) {
router.events
filter(e => e instanceof NavigationEnd)
.forEach(e => console.log(route.snapshot.params['category']);
}
答案 1 :(得分:1)
您也可以使用Angular 2(撰写本文时的Angular 5)执行此操作:
constructor(private router:Router) {
router.events.subscribe(data=>{
if(data instanceof ActivationEnd){
this.category = data.snapshot.params['category'];
}
});
}
答案 2 :(得分:0)
constructor(private route: ActivatedRoute, private router: Router) {}
ngOnInit() {
this.route
.queryParams
.subscribe(params => {
this.page = params['category'];
});
}