The Nice library has been updated to improve ChartJS functionality:
 - now supports multiple independent ChartJS charts in forms
 - now shows tooltips for data points on most graph types

ChartJS does some things better than Google charts, I prefer its bar charts.

For details, see https://erickengelke.com/nice

Erick
EWB Programming Books and Component Library
http://www.erickengelke.com