Problems with document.referrer
javascript, referrer
Solution
`document.referrer` is `not empty` if your site URL was clicked from other website, like from google search, from facebook, twitter, etc...
So, If someone opens your site from bookmark o directly types your site URL, `document.referrer` is `empty`.
Let's see these examples:
Click this link http://www.w3schools.com/jsref/prop_doc_referrer.asp you can see that document.referrer is `http://stackoverflow.com/questions/28646433/problems-with-document-referrer`
If you search in google `HTML DOM referrer Property`, document.referrer will be `http://google.es/...`
And if you copy `http://www.w3schools.com/jsref/prop_doc_referrer.asp` opens new tab in your browser and paste it, `document.referrer` will be `empty`.
Problem
I'm having some trouble using document.referrer on some sites, even the reference site using HTTP protocol. In what circumstances document.referrer may be empty (except HTTPS to HTTP)? What is the best way to get the url reference only document.referrer? In my site, document.referrer is empty, but when I look in Analytics website of references appears.