Unable to display the ions

Ionic Framework ionic-v3
1 
If I try to use the icons which is available at http://ionicons.com/ within the            

    <button primary clear item-left  danger (click)="notficationsAlert()">
                    <ion-icon name="ion-arrow-expand" ></ion-icon>
                </button> 
It doesn't show up. It works if I use the icons given here: http://ionicframework.com/docs/v2/components/#icons or here: https://github.com/driftyco/ionic-preview-app/blob/master/app/pages/icons/basic/template.html 

What could be the issue for this? Please Help?
2

I figured it out I should not add “ion-arrow-expand” within the name attribute I should just use: “expand”. Let me know if there are any alternative ways?

3

So the ionicons you’ve linked to are for ionic v1 only.
For icons, you can use

http://ionicframework.com/docs/v2/resources/ionicons/

4

Thanks i’m using the V2 icons now.