I tried to use JsPlumb and it was a nightmare. I think there is a lot of documentation for JsPlumb, but it's structured so poorly that it makes it hard to use. I'm pretty sure I had an unpleasant experience with JsPlumb mostly because the framework behaves much differently than what the documentation suggests.

You should still check it out though. It might work for you.

https://jsplumbtoolkit.com/