javascript - How can I determine if the document.referrer is from my own site?

Question

Each time a page is requested I get the referrer of the page it came from. I need to track just referrer from other sites, I don't want to track going from one page to another within my site. How can I do that?

Answer 1

document.referrer.indexOf(location.protocol + "//" + location.host) === 0;