How to pass query parameters with a routerLink ?

22 Jul, 2020
The task is to pass query parameters with a routerLink, for that we can use the property binding concept to reach the goal. Using property binding, we can bind queryParams property and can provide the required details in the object.
What is Property Binding?
It is a concept where we use square bracket notation to bind data to Document Object Model(DOM) properties of Hypertext markup language(HTML) elements.
Syntax:
<a [routerLink]="[/path]" [queryParams]="{property:value}">
   State Details 
</a>
 
An Example of property binding:
Javascript
import { Component, OnInit } from '@angular/core'  @Component({      selector: 'app-property',    template:        // Property Binding         `<p [textContent]="title"></p>`})  export class AppComponent implements OnInit {      constructor() { }    ngOnInit() { }      title = 'Property Binding example in GeeksforGeeks';  }
Output:
Illustration of above code
Approach:
First, configure the routes in app.module.ts
Implement query params with required values in the HTML file.
Then in .ts file, in ngOnit try to access the query params using the activated Route by importing it  from ‘angular@router’
Once you are able to access them try to render them by using either string interpolation syntax or property binding syntax in HTML file.
Below is the implementation of the above steps:
app.module.ts:
Javascript
import { NgModule } from '@angular/core';import { BrowserModule } from             '@angular/platform-browser';  // Importing Routesimport { RouterModule, Routes }         from '@angular/router';  import { AppComponent } from             './app.component';  import { StateComponent } from         './state/state.component';  // Configuring Routesconst routes: Routes = [{     path: 'punjab',     component: StateComponent },];  @NgModule({    imports: [BrowserModule, R        outerModule.forRoot(routes)],              declarations: [AppComponent,         StateComponent],    bootstrap: [AppComponent]})export class AppModule { }
app.component.html:
HTML
<a [routerLink]="['/punjab']" [queryParams]=    "{capital:'mohali',language:'punjabi'}">    State Details</a><router-outlet></router-outlet>
After clicking on the anchor tag the URL will be displayed in the following way:
We can also access the query parameters using the activated route.
In this way, we can pass query parameters via routerLink.
Fetching of query parameters:
state.component.ts :
Javascript
import { Component, OnInit } from '@angular/core';import { ActivatedRoute } from '@angular/router';  @Component({  selector: 'app-state',  templateUrl: './state.component.html',  styleUrls: ['./state.component.css']})export class StateComponent implements OnInit {    capital: string;  language:string;    constructor(private route: ActivatedRoute) { }    ngOnInit() {    this.route.queryParams.subscribe(      params => {        this.capital =  params['capital'];        this.language=params['language'];      }    )  }  }
state.component.html:
HTML
State Details are :   <p>Capital  : {{capital}} </p>  <p>Language : {{language}} </p>
Output:
Before Click the Button:
Before Click the Button:
After Click the Button: Hence query parameters passed can be seen
After Click the Button: Hence query parameters passed can be seen
AngularJS-Misc
JavaScript-Misc
Picked
AngularJS
JavaScript
Web Technologies
Writing code in comment?
Please use ide.geeksforgeeks.org,
generate link and share the link here.