Question

我想从与此类似的链接中获取参数＆＃34; sample.com/product/45"使用＆＃34; product /：id＆＃34;，这是我的路线声明：

export const routes: Routes = [
  { path: 'product/:id', component: Product }
];

这是组件类

export class Product implements OnInit, OnDestroy {
  id: number;
  private sub: any;

  constructor(private route: ActivatedRoute) {}

  ngOnInit() {
    this.sub = this.route.params.subscribe(params => {
       this.id = +params['id'];

       console.log(this.id); //I get undefined here
    });
  }

  ngOnDestroy() {
    this.sub.unsubscribe();
  }
}

当我尝试使用console.log（）id时，我得到了未定义的

Answer 1

试试这个，

SELECT keyname, real_ip, virtual_ip, received_bytes, sent_bytes, connection_tstamp FROM connection_temporary WHERE keyname IN (SELECT keyname FROM CONNECTION)

如何使用＆＃34; /：params＆＃34;获取参数在Angular 2中

1 个答案: