Added button isn't recognized

Hi Guys/Girls!

I’m quite new to Ionic and trying to solve problems without help but this problem in particular I could not find in the internet.

So I’m trying to create an Soundboard App for Android. When I try to add HTML via “document.getElementByID(‘soundboard’).innerHTML += myNewSound”.
( var myNewSound = ‘<button ion-button (click)=“logEvent($event)”>!Click me!!!’)
,the Element will show up but this button won’t load it’s css and is’nt showing any events in the console.