Icons

Ionic also comes with its own free and open-sourced icon font, Ionicons, with over 500 icons to choose from.

Simply add icon and the Ionicon classname for the icon to show, which can be easily looked up on the Ionicons homepage.

<iclass="icon ion-star"></i>

While it's possible for buttons to use a child <i> to set the icon, they can also set their icon just by setting the buttons own class. Please take a look at button icon docs for more info.

Note: Ionic is certainly not restricted to using only the Ionicons icon pack, so please feel free to use any icons you wish.