Update: Remote Debugging
Currently in Android 4.0.3 (Ice Cream Sandwich), the logcat outputs to the browser channel. So you can filter using
adb logcat browser:* *:S.
You can use the built in
console.error('1'); console.info('2'); console.log('3'); console.warn('4')
Produces this output:
D/WebCore ( 165): Console: 1 line: 0 source: http://... D/WebCore ( 165): Console: 2 line: 0 source: http://... D/WebCore ( 165): Console: 3 line: 0 source: http://... D/WebCore ( 165): Console: 4 line: 0 source: http://...
Determining the version of WebKit
If you type
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.2 (KHTML, like Gecko) Chrome/188.8.131.52 Safari/532.2
On Android Emulator
Mozilla/5.0 (Linux; U; Android 1.6; en-us; sdk Build/DRC76) AppleWebKit/528.5+ (KHTML, like Gecko) Version/3.1.2 Mobile Safari/525.20.1
Versions of WebKit that are not part of a Safari release have a + after the version number, and their version number is generally higher than the latest released version of WebKit. So, for example, 528+ is an unofficial build of WebKit that is newer than the 525.x version that shipped as part of Safari 3.1.2.