About the HTML5 chart events
The set of events for an HTML5 chart is much smaller than the set of events for a BIRT chart. Table 15-3 lists the HTML5 chart event functions and describes when they are called.
Table 15-3  
beforeDrawDataPoint(point, pointOptions, chart, seriesIndex, pointIndex)
Before drawing each data point graphical representation or marker

Additional Links:

Copyright Actuate Corporation 2012