angularjsHow can I use Angular to set query parameters in a URL?
Angular provides a built-in service called the HttpParams
class which can be used to set query parameters in a URL. The HttpParams
class is part of the @angular/common/http
package and can be imported like so:
import { HttpParams } from '@angular/common/http';
The HttpParams
class provides several methods for creating and manipulating query parameters. For example, to create a new query parameter you can use the set
method like so:
const params = new HttpParams().set('key', 'value');
To add additional query parameters, you can use the append
method like so:
const params = new HttpParams().set('key', 'value').append('key2', 'value2');
The query parameters can then be used to create a URL like so:
const url = `http://example.com/?${params.toString()}`;
// http://example.com/?key=value&key2=value2
The HttpParams
class also provides several other useful methods for manipulating query parameters, including delete
, setAll
, has
, keys
, get
, getAll
, and appendAll
.
For more information, see the official Angular documentation.
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