Split 3D model and pass variables to JS

I have a 3D Blender model of 3 dices. I need to split it to meshs/parts/pieces of an each dice. With a hover for every dice i need to highlight that dice with yellow (or red/blue) color and by clicking on the one - send a variable to a javascript like "first", "second", "third" (no matter the sequence just unique). After that i need a very simple HTML page with that 3D model by threejs (JSON file) rendering and JS variables in browser console.