Game engines are aware of the scripting languages embedded in them. Browsers are largely unaware of anything but Javascript. On top of that a lot of DOM manipu

Game engines are aware of the scripting languages embedded in them. Browsers are largely unaware of anything but Javascript. On top of that a lot of DOM manipulation is smoke and mirrors. While the exposed DOM APIs may provide you with some object, internally it's likely to be a collection of weird things in a trench coat due to all the optimisations that browser engines are doing. And no one in their right mind will give you raw access to the underlying C++ object for many reasons, security being number one. And 30 years of assumptions that browsers have about these objects being number two.