I want to test my Windows 8 phone app. I want to plug it into the desktop computer and view the JavaScript console output on the desktop. I can debug the app itself in Visual Studio but I want to see the JavaScript console output. Is this possible? I know you can do it with Android phone
https://developers.google.com/chrome-developer-tools/docs/remote-debugging#enable-usb-debugging
but what about the Windows 8 phone? What about previous versions of the windows phone? What about the different versions of the iOS?
It is not possible to do this on Windows Phone 8.
There is no information available about what may be possible in future versions.
Unfortunately, you'll have to show your output on the page to debug web pages on actual devices.