How do I interact with the scene from javascript in the HTML?

[Arte]

Hi @synth and welcome,
Simillar topic

getMeshByName does not function

First of all if you have a new question start a new topic. You are much more likely to get an answer to your question. Particularly if your first question is solved. Yes you can use an HTML GUI Simple example Babylon.js Playground or dat.gui https://www.babylonjs-playground.com/#NGS9AU#1 or CastorGUI - Babylon.js Documentation Babylon.GUI is necessary if you are using VR or you want the GUI to be within the 3D world not just overlaying it.