I am trying to find everything in a paragraph that is not abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 and not space / /gi
/[^a-zA-Z0-9]|[^ ]/g
You could also try with:
/[^a-zA-Z0-9\s]/gi