Angular 5 remove query param

Question

How would I remove a query parameter from the URL? For example from www.expample.com/home?id=123&pos=sd&sd=iii to www.expample.com/home?id=123&sd=iii

EDIT: This is my version:

this.activatedRoute.queryParams.subscribe(c => {
  const params = Object.assign({}, c);
  delete params.dapp;
  this.router.navigate([], { relativeTo: this.activatedRoute, queryParams: params });
}).unsubscribe();

Answer 1

You can remove a query parameter by using the merge option of queryParamsHandling and passing in null for any params you wish to remove.

// Remove query params
this.router.navigate([], {
  queryParams: {
    'yourParamName': null,
    'youCanRemoveMultiple': null,
  },
  queryParamsHandling: 'merge'
})

This option is simpler and requires less work to ensure you are not removing other params. You also do not need to worry about cleaning up an observable subscription when your component is destroyed.

Answer 2

UPDATE: @epelc's answer below is the up-to-date and correct way to do this: https://stackoverflow.com/a/52193044/5932590.

---

Unfortunately, there is no clear-cut way to do this currently: https://github.com/angular/angular/issues/18011. However, as jasonaden commented on the linked thread,

This could be done manually by merging the old and new query params, removing the key you don't want.

Here is one way to do that:

Let's say you have your queryParams stored in some properties.

class MyComponent() {
  id: string;
  pos: string;
  sd: string;

  constructor(private route: ActivatedRoute, private router: Router) {}

  ngOnInit() {
    this.route.url.subscribe(next => {
      const paramMap = next.queryParamMap;
      this.id = paramMap.get('id');
      this.pos = paramMap.get('pos');
      this.sd = paramMap.get('sd');
    });
  }
}

A method to clear the pos parameter would look like this:

clearPosParam() {
  this.router.navigate(
    ['.'], 
    { relativeTo: this.route, queryParams: { id: this.id, sd: this.sd } }
  );
}

This will effectively navigate to the current route and clear your pos query parameter, keeping your other query parameters the same.

Answer 3

This is the best sulotion that i found, you can change url parameters

in constructor use

    private _ActivatedRoute: ActivatedRoute

then use this in init or in constructor body

    var snapshot = this._ActivatedRoute.snapshot;
    const params = { ...snapshot.queryParams };
    delete params.pos
    this.router.navigate([], { queryParams: params });