If you haven't heard about WASM or Web Assembly, I won't be surprised, but this is the next big technology that's going to take the web by storm.
Check out the demo below. It has no Javascript, runs in your browser and has no server interaction. They just demoed autocad doing this.
Javascript developers beware.
Check out: http://aws-website-webassemblyskeletalanimation-ffaza.s3-website-us-east-1.amazonaws.com/