angular router with wuery param
goProducts() {
  this.router.navigate(['/products'], { queryParams: { order: 'popular' } });
}
http://localhost:4200/products?order=popular
 constructor(private route: ActivatedRoute) { }
  ngOnInit() {
    this.route.queryParams
      .filter(params => params.order)
      .subscribe(params => {
        console.log(params); // { order: "popular" }
        this.order = params.order;
        console.log(this.order); // popular
      }
    );
  }
