javascript - Live JS/Jquery, Html, CSS Editor -

I am making my own code for a live HTML / js / jquery / css editor. It's just the code to inject CSS, HTML and Javascript (especially junkies). CSS and HTML are working fine, but whatever I'm not doing, jquery or javascript for iq start working ... myres heres:

  var content = $ ('iframe ') .contents (), body = contents.find (' body '), style tag = $ ('