Injecting Javascript to Iframe

Question

I am making a live editor for my website. I have the CSS and HTML parts down, only issue is the JS part now. Here is a snippet of the code

var frame = $(\'#p         


        

Answer 1

These two lines of code look like they could have problems:

csstag = contents.find('head').append('').children('style');
java = contents.find('head').append('