debugging android with firefox

you can debug android firefox using firefox developer tools

about:debugging allows you to connect to the android device to debug it

set up adb android debug bridge using adb start-server list devices using adb devices

open about:debugging in firefox enable debugging in Firfox for Android Settings -> Advanced -> Remote debugging via USB

connect to the device using adb connect <device-id>

your device should show up in the about:debugging page connect to it and get to work