jquery implementation code for finding iframe parent page elements_jquery

Parent page code

iframe page code

There is such a record in the jQuery documentation:
jQuery(html, [ownerDocument])
Parameters
html String
HTML used to dynamically create DOM elements Mark string

ownerDocument (optional) Document
Create the document where the DOM element is located


You still need to read more and read the document carefully. It is really the saying: read the book a hundred times , its meaning is self-evident!

------Additional note--------------------------

During testing, I found that chrome could not achieve the above requirements. Later, I saw someone on the Internet pointing out that iframes cannot cross domains. This is one of the problems. Another reason is to put it into a site for testing

For example: http:// localhost:8087/test.html

In this way, chrome will behave normally