how to add Axes grid in vtk.js

I have a 3d viewer base on OBJViewer. Is there a way to add axes grid to it ?

The closest we have is OrientationMarkerWidget. If you want in-world axes grid, you can try to make something using vtkPolyData and lines.

Thanks. I am using Orientation Marker.
Will vtk.js have support for axes grid in the future ?

Yeah, I think that will be useful to add/port from VTK. Of course, it’s one of the more complicated ones to implement, and right now that’s not on any roadmap I’m aware of.