As a web developer, I have to use
Download a log view from the android market (e.g. search for logcat). This shows all log messages. Most logcat viewers will let you search/filter, so search for
"browser". All console.log messages will come up there.
One difference from Firebug/Chrome Web Inspector: The Android web browser only prints the first argument to
console.log(...), so you should do
console.log("here's my variable "+var); rather than
console.log("here's my variable ", var);