Is it even possible to build by myself a jQuery like javascript framework? If it is so, what i need to learn? Source code by itself is complex. I used to work with javascript for more than 5 years and i was building a javascript framework until know jQuery and i became fascinated, i'd like to build one like this. I know that alot of people contributes for its source code but i guess all of them or at least most of them is able to build it.