title: $(body) inside an iframe
body: <p>Let's say I have an iframe page (iframe.html). Inside this page, I have a script
  $(body) or $(document). Now I wanted to understand what does it represent ?</p>
  
  <p>Does it refer to iframes body or the main page body ? If it represnts the main page, how do I make it refer to the iframe  ?</p>