Konva.js is a HTML5 2d canvas js library for desktop and mobile applications.
You may also be interested in ...
Plotly
Plotly is an Open Source Graphing Libraries and an interactive charts and maps for Python, R, Julia, Javascript, ggplot2, F# ...
Popmotion
The animator’s JavaScript toolbox.
4 Best Practices to Write Quality JavaScript Modules
Using ES2015 modules you can chunk the application code into reusable, encapsulated, one-task focused modules. That’s all good, but how do you structure modules? How many functions, classes a module should have? This post presents 4 best practices on how to organize better your JavaScript modules. Post written by Dimitri Palvutin.