OP

@clker
Running on a device
What happens when you run ionic run?

Your files for the app are copied to the device (or simulator).
The app runs, thus firing a browser on the phone/simulator to run the files that were copied over, something like: file://some/path/www/index.html.
Your origin will not exist, since you are running off of a file:// URI; therefore, any request outwards will not require a CORS request.
然而我没开任何的live reload，在设备上和模拟器都无法发请求