[drcode]

The goal of these types of systems (react.js essentially does the same thing) is to fully abstract away the need for direct HTML/DOM manipulation.

Now it's possible that the layout of the current browser DOM represents ultimate perfection and we will never improve upon it. However, it is more likely that we will find some way to come up with a better design for the DOM in the future (i.e. new types of nodes, node attributes, member functions, or some sort of entirely new data structure) and these types of frameworks allow us to experiment with new DOM ideas. With oj.js or react.js you could write to this "new DOM" and the library will project changes back to the legacy DOM.