ChartJS:HTML5 Diagram The pattern library is a is an HTML5 chart library that uses the canvas element to display a wide variety of client-side charts, supporting line charts, bar charts, radar charts, pie charts, ring charts, etc. The operation is very simple, and is geared towards object-oriented client-side graphic designers and developers.

In each type of chart, there are also a large number of customizable Chart.js is a project done by Downie, the developer, in his last year of college. Chart.js is relatively lightweight and does not rely on other libraries, and is free and open source.