Ask HN: How does Google Analytics, a client-side script, get referring URLs?

2 pointsby mjswensenvor 6 Jahren2 comments

Shower thought: given that Google Analytics is installed by dropping a JavaScript snippet onto the page, how does Google get the referring page when visitors land on the page via link or search result, etc.?

2 comments

Hackbratenvor 6 Jahren

The script should be able to read `Document.referrer` and post the result to wherever it wants.

mjswensenvor 6 Jahren

There it is. Thank you!