Simple sparklines charts
Hello,
Let me introduce a simple JS library to create a sparklines charts: github.com/railsjazz/peity_vanilla
It's based on jQuery lib "peity" but this version has no jquery dependency and could be added now to your project.
With just a line of code you can add a simple but really informative charts (line, bar, donut, pie) to your app.
Give it a try.