Ranked in these QuestionsQuestion Ranking
Pro Strong documentation
D3js.org provides a long list of examples demonstrating the library in use, and the code for those examples. D3js.org is also where the documentation for the library can be found (such as a list of all the methods available).
Con Not beginner friendly
Though D3js.org provides some tutorials, the documentation is better suited for developers who have already been introduced to the library and need to reference the official documentation. Someone new to D3.js will most likely find themselves unsure where to start.