DHTMLX Docs & Samples Explorer

Index
dhtmlxchart
Events

## onBeforeAdd

Event name is case insensitive.

This event calls user-defined handlers (if there are any) and passes the following parameters:

- obj - data for a new item
- index - an index, at which a new item will be added

      chart.attachEvent("onBeforeAdd", function (obj, index){
           //any custom logic here
      });

Event can be blocked, returning false will prevent normal reaction of component.