Unity Javascript Bridge
https://docs.unity3d.com/Manual/webgl-interactingwithbrowserscripting.html -공식문서 https://www.youtube.com/watch?v=GXI3hqTRnnE - 샘플 프로젝트 + 가이드 https://www.youtube.com/watch?v=3g0N__K7Wlo - javascript to unity only 가이드 https://github.com/najongjine/UnityJavascriptBridge - 샘플 프로젝트