codeComment.js

$(document).ready(function(){
 //We are replacing "<" "</" "/>" ">" with their entities only between <code> tags
 $("code").each(function(){
 var str = $(this).html() //Here we are getting code as it is left after replacing more difficult tags in php
 str = str.replace(/</g, "&lt;").replace(">", "&gt;").replace("</", "&lt;/").replace("/>", "/&gt;") 
 $(this).html(str) //Here we return our changed comment. Enjoy :D
 })
})