问题
A page loads another domain in an iframe. If javascript inside the iframe clicks on a link in the iframe which domain will the referrer be?
回答1:
Referer will be the page on which the link is clicked. In your case, it will be domain that is opened in iframe.
回答2:
Unless it's IE6 - then it's the original page - strange? Ohh yes
回答3:
It will obviously refer to the new domain.
来源：https://stackoverflow.com/questions/2324202/javascript-iframe-link-referrer