Can you do JavaScript development with just an iPad at hand?

I went on vacation recently and while I devoted 99% of my time to actually being on vacation, there was time to do an experiment I wanted to do. Which was part of my vacation too, because I don't know when I'd get the chance during a regular week. I wanted to see if you can do meaningful software development in JavaScript using only an iPad and a Bluetooth keyboard. Here's the results of my experiment...