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dhtmlxchart
API Methods

## attachEvent (evName, evHandler)

Required library edition:

Required library file: dhtmlxchart.js

adds any user-defined handler to available events

- evName - event name;
- evHandler - user-defined event handler.

                  chart.attachEvent(evName, evHandler);

Several handlers can be attached to the same event, and all of them will be executed.

event names are case-insensitive.