I learned it while at the same time learning (or really enhancing my previous knowledge of) javascript, thanks to an insane mostly-Finnish app development platform known as Qt Creator, which for no rational reason uses C++ for the under-hood-stuff and javascript for the UI front end. Just an absolutely horrible mismatch of mental states. For bonus points, the company that I worked for that used this monstrosity for its suite of apps got purchased by a huge west coast company and the apps were shut down and everybody was fired, after two years of my working on this shit.