Is there an example of using group.memberParts?

GoJS
1

What I need is to get all node in a group, will memberParts give me the nodes?
can’t find an example of how to use it?

2

Yes, iterate over the Group.memberParts collection. You may want to skip over any Parts that are not Nodes, depending on your purpose.

  aGroup.memberParts.each(function(p) {
    if (p instanceof go.Node) { . . . }
  });

Read GoJS Collections -- Northwoods Software for more examples and discussion, or search the samples for memberParts.