Table of Contents

URL: https://www.progressiverobot.com/ionic-navigating-passing-data-ionic/

In Ionic you get a class named <^>NavController<^> to navigate between pages, and one named <^>NavParams<^> to get data from the page you navigated from.

You start by importing <^>NavController<^> as well as the class of the page you'll be navigating to in your starting component/page:

Component: something.ts

				
					
import { NavController } from 'ionic-angular';

import { SomethingElsePage }

     from '../something-else/something-else';

Then you inject <^>NavController<^> in your component's class constructor:

Component: something.ts

				
					
constructor(public navCtrl: NavController) {}

And now let's say that your page template has a button like this:

Template: something.html

				
					
&lt;button ion-button (click)="goToSomethingElse()"&gt;

Then your component would have a <^>goToSomethingElse()<^> method like this:

Component: something.ts

				
					
goToSomethingElse() {

    this.navCtrl.push(SomethingElsePage);

}

In the SomethingElsePage component you'd use NavController's <^>pop<^> to go back to the previous view:

Component: something-else.ts

				
					
goBack() {

    this.navCtrl.pop();

}

Passing and getting data with NavParams

ionic illustration for: Passing and getting data with NavParams

The above is all fine and good, but oftentimes we'll want to pass data over to the page we're navigating to. Just pass it as a JSON object to the second argument of the <^>push<^> call. In the below sample code, <^>payload<^> would be our JSON object that we're passing:

Component: something.ts

				
					
goToSomethingElse(payload) {

    this.navCtrl.push(SomethingElsePage, payload);

}

Now in your destination component/page, you'll also need to import and inject <^>NavParams<^>:

Component: something-else.ts

				
					
import { NavController, NavParams } from 'ionic-angular';



...

And now finally, you can access the data with NavParams' <^>get<^> method. Let's say for example that our payload JSON object as a <^>ketchup<^> key and you want its data:

Component: something-else.ts

				
					
ketchup: string = this.navParams.get('ketchup');