No, it's a standard part of Firefox. "View Selection Source" is too, which can be useful.
I agree that Web Developer (or similar plugins) can be a great way to learn.
FireBug even has a javascript REPL built in!
No, it's a standard part of Firefox. "View Selection Source" is too, which can be useful.
I agree that Web Developer (or similar plugins) can be a great way to learn.