Event handlers

This JavaScript tree example illustrates the ability to assign user-defined functions to different event handlers (e.g. Mouse Over, Mouse Out, Check, UnCheck, Select, Deselect). If you try to change a checkbox value, an alert box will appear. Alert box is displayed also when a tree node is selected. Confirm box will pop up if user opens or closes a node.
So, dhtmlxTree allows you to define any functions and attach them to event handlers in order to customize tree behavior. That enriches possibilities for user interaction with JavaScript tree interface.

• Selected node ID will be passed to function specified as argument for setDefaultAction(funcObj)
• Dropped node ID and new parent node ID will be passed to function specified as argument for setDragFunction(funcObj)
• node ID will be passed to the function specified as argument for setOpenAction(aFunc)
• node ID will be passed to the function specified as argument for setDblClickAction(aFunc)