I never ended up using it but take a look at https://code.google.com/p/google-caja/wiki/JsHtmlSanitizer https://code.google.com/p/google-caja/wiki/JsHtmlSanitiz

I never ended up using it but take a look at https://code.google.com/p/google-caja/wiki/JsHtmlSanitizer https://code.google.com/p/google-caja/wiki/JsHtmlSanitizer and there is a node wrapper here https://www.npmjs.org/package/google-caja https://www.npmjs.org/package/google-caja Funny about Node Sandbox. I was fluctuating from grasping it completely to asking wtf is this myself, lol.