Create bar charts using Morris.Bar(options), where options is an object containing the configuration options.
This really couldn't be easier. Create a Donut chart using Morris.Donut(options).
Create an area chart using Morris.Area(options). Area charts take all the same options as line charts.
The public API is terribly simple. It's just one function: Morris.Line (options), where options is an object containing some of the configuration options.