Run jQuery on External pages/debugging jQuery

I am a beginner at jQuery. I am trying to practice as many functions as i can. BUT i am tired to write HTML for all this stuff. So is there any way i can run jQuery functions on any page as in 开发者_开发百科google.com or any other site, any chrome extension ?

js console for one. If the site has jquery (like StackOverflow) you can press ctrl-shift-j to open up the console and directly run jquery commands. otherwise there's jsfiddle.net.

I had the same problem with me, when i started using jQuery. But i found an excellent chrome extension for that.Its called jsshell.Here is the link and yes, it has a Auto Complete feature which i love very much. :)

Try http://jsfiddle.net/. JsFiddle is a playground for web developers