I am getting x-wmapp2:/app/www/index.html as output when I try to console.log(windows.location.href); in my Windows Phone PhoneGap app when I try to run in emulator. When I try to run actual device, it gives x-wmapp1:/app/www/index.html. What is x-wmapp2 and x-wmapp1? What is the difference between them? I also find there exists x-wmapp0 also. Could someone explain this?
It appears to be the Scheme of the WebBrowser element whenever one is opening locally-stored web pages.
Actually, it starts from x-wmapp0 and is incremented for every new instance of WebBrowser. Whenever the app is started anew or tombstoned and restarted, the count goes back to zero.
Of course, these is my personal experience. Only a chap from the IE team at MS could say for certain.
来源：https://stackoverflow.com/questions/17525840/what-is-x-wmapp2-and-x-wmapp1