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this.router.navigateByUrl('product?pageNum=2');
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this.router.navigate(['my-route', 37], { queryParams: { username: "jimmy"}});
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goTo() {
this.router.navigate(
['/products'],
{ queryParams: { page: 2, sort:'name'} }
);
}
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<a [routerLink]="['products']"
[queryParams]="{ color:'blue' , sort:'name'}">Products</a>