JS can follow MVC / OO model. Simply most people don't try to do it and go with functional approach; add to this simplicity JS can be diven into, and you get th

JS can follow MVC / OO model. Simply most people don't try to do it and go with functional approach; add to this simplicity JS can be diven into, and you get the results we get where people cry that JS (jQuery) gives unmaintainable code. Reactive libraries try to address the issue by forcing you to create OO components and (to a degree) MVC patterns.