XPath
This a query language that can be used to select arbitrary parts of HTML documents in ability.
XPath is a language that describes a way to locate and process items in HTML And XML documents by using an addressing syntax based on a path through the document's logical structure or hierarchy.
Get XPath of Selected Element Of IFrame Using Jquery

If you want to get element`s XPath of selected element of Iframe and also add highlight css in element on mouseover , out and click event.
  1. Create Project
  2. Add an Iframe page

    a. Add required contents & element
    b. Add reference of “Highlight” css file under the page head.

  3. Add Iframe parent page
a. Add Iframe
b. Add required content and element.
c. Add jquery-1.4.1.js or latest js file under head section
d. Create Jquery code and function for this functionality.
e. Add document.ready function.
f. Create function get element`s XPath.
Highlight CSS (highlight.css)
IFrame Page(Iframe.htm)
Main Page (Parent Page-Index)

Jquery Code 

Sample Screenshots
Highlight-on-mouseover



Get XPath On Click In Alert()