Tree API

Name	Description	Type	Default
data	data for Tree nodes. It must be array	array	[]
className	you can give className to tree components.	string	null
draggable	whether use or not drag event.	bool	true
icons	customize icons	elements, function(icons)	-
onClick	you can add some logics through this function when tree node is clicked	function	-
onExpand	you can add some logics through this function when tree nodes are expanded	function	-
getData	you can get data from this function	function()	-
onDragStart		function(event)	-
onDragEnter		function(event)	-
onDrag		function(event)	-