Viewer API: Cameras, AR, Zoom, Fullscreen buttons

Hi!
If I use iframe, it has parameters showZoomButton, showFullscreenButton.
I need to add these buttons via API.
Is it possible to add buttons Cameras, AR, Zoom, Fullscreen to Viewport using API with properties in function createViewport?

When using direct embedding (using the viewer API), these UI elements need to be created by your application.
In case you are using React, we do have example code for creating these buttons here.
How are you developing your application? Are you using any frontend framework?

Thank you for example, it’ll be helpful, we use Vanilla JS.