How to include a custom submit screen when you use straight Javascript.

[TheBitmonkey]

This is great.. but I do not know how to load a custom completed screen through Javascript. I have tried every combination by now and nothing seems to work.

[spinn]

I've prepared a small CodePen for you (this is the support page example but using straight JavaScript):

https://codepen.io/DITDOT/pen/rNjZGgq

Hope this helps, but if not of course feel free to ask any additional questions.