I was wondering about this too. But what good is being able to code in a browser unless you can actually [compile and] run your code somewhere? I can see how

I was wondering about this too. But what good is being able to code in a browser unless you can actually [compile and] run your code somewhere? I can see how a browser-based editor could be great for editing JavaScript. But unless the browser also hosts or provides access to a platform for the language you're working in, what is there to be gained by coding in a browser?