i want a Serial type animation for my tree chart

Treeload animation GoJS Sample Loading a tree with custom GoJS animation.

Could you please describe what you want? Have you looked at version 2.1? Announcing GoJS 2.1 Alpha Release

I haven’t looked, but I want “Instead of getting the whole tree at initial time of loading, I want the root node to appear first and then the second layer and then third layer in regular intervals of time” Is that possible!!??