My favorite is noticing something weird, opening the inspector, and figuring out the issue quick. Console expressions, breakpoints, etc... it's a powerful environment. (Of my other 2 editors, Vim is fairly difficult to figure out and Sublime is a black box)
Being able to style whatever you want with css is handy too, though sometimes it's tough to figure out the right css selector to use.
Being able to style whatever you want with css is handy too, though sometimes it's tough to figure out the right css selector to use.