C3.js: D3-based reusable chart library (!)

C3.js | D3-based reusable chart library

"C3 enables deeper integration of charts into your application."

• ComfortableC3 makes it easy to generate D3-based charts by wrapping the code required to construct the entire chart. We don't need to write D3 code any more.
  
• CustomizableC3 gives some classes to each element when generating, so you can define a custom style by the class and it's possible to extend the structure directly by D3.
  
• ControllableC3 provides a variety of APIs and callbacks to access the state of the chart. By using them, you can update the chart even if after it's rendered.