I feel like if you are trying to make your online flower shop work, you probably shouldn't go near any where near any of these libraries. I think they are for experts who are working on large projects, probably 30,000+ lines. For the casual developer, use a script tag and go sell some flowers. I love that you can do that with Javascrpt, it's really easy to just write some code, so many fewer things to worry about for the beginner/intermediate than languages like Java and you can be so much more productive at the non-expert level.