Is it easy to develop a simple Firefox plugin (JS injection)

Question

Hello everyone! So I was just wondering if it was easy to develop a very simple Firefox plugin where you could click a button, and it would execute some Javascript code!

Please note that I have never developed any kind of plugin for firefox, I just want to know if that is an easy task to do (like less than an hour)

I would also like to redistribute this very simple plugin to my friends.

Answer 1

If you just want to do this, you could create a Greasemonkey plugin instead. This is really simple.

Answer 2

Have a look at Jetpack: https://jetpack.mozillalabs.com/ or possibly GreaseMonkey: http://www.greasespot.net/

Answer 3

Or, if you wanted to actually create an extension you could use something like:

http://www.rietta.com/firefox/Tutorial/overview.html

which provides a nice complete walkthrough. Couple with MDC, and AMO you have everything you need to build a Firefox extension. All you need a a background is some HTML, CSS and JavaScript knowledge and you're there!