onDragOver

fires when when a dragged item is moved over the droppable area, cancelable

id	string|number	the item's id
pId	string|number	the parent's id
index	number	the new item's index

boolean

true to allow highlighting the drop area and an item can be dropped at a certain place

Example

myTreeView.attachEvent("onDragOver", function(id, pId, index){
    // your code here
    return true;
});

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