After an upgrade to OSX 10.9.3 (13D65) and Safari 7.0.4 (9537.76.4), I am unable to set breakpoints in my cordova app using the Safari web inspector. Enabled breakpoints appear as dark grey, disabled as a lighter grey. "debugger" statements are ignored. The behavior is the same on either the simulator (iOS 7.1 11D167) or a physical device (iOS 7.1.1 11D201). The mobile app does show up under the Develop menu (iPad Simulator or xxx iPad). I can inspect the DOM. I tried the solutions suggested in this problem: Why is Web Inspector showing me "no inspectable applications"?, and this Why Safari shows "No Inspectable Applications" during remote debugging with iOS 6 device?.
The mobile app is compiled locally. It is debuggable on a second machine running the same versions of OSX & Safari, but I don't have access to that machine full time. Both machines have the same developer profiles and certificates (with private keys). How can I diagnose this?? Thank you for your help.
turns out that the issue was "Stop-plugins to save power" was enabled under Safari / Preferences (Advanced Tab). That disabled the ability to set a breakpoint. I don't recall setting that, but I didn't see anything indicating that the upgrade set that preference.
It is also necessary to place your breakpoints on lines containing executable code.
Breakpoints on blank lines between other lines of code are ignored.
来源：https://stackoverflow.com/questions/24495214/unable-to-set-web-inspector-breakpoints-after-upgrade-to-safari-7-0-4-both-loca