I want to debug my PhoneGap app in Xcode, but its Console can not show javascript errors.
Here's a simple way that worked for me:
Start a http server using python by invoking (I used python 2.7):
python -m SimpleHTTPServer
View the page in safari by entering the address of the HTTPServer in a browser, for me the URL was:
http://0.0.0.0:8000/
Open developer tools:
In chrome this is alt+command+i. View the console tab, may need to refresh the page.
In Safari: Safari --> Preferences --> Advanced --> check "Show Develop Menu". Develop menu --> Show error console (or alt+command+c). Refresh the page. Hitting CTRL+5 opens the issues tab.