Javascript document.referrer with full querystring

问题

I am trying to get the full referring url to a page via javascript.

So far the closet I have come is

var lastUrl = document.referrer;

This does not include the query attached to the url.

var lastUrl = document.URL;

returns the current URL with the querystring intact.

Is there anyway of easily obtaining the referring url along with the referring query.

回答1:

You cant. You can navigate user to previous page with

window.history.back();

but you will not know what url it was. You can get only this:

document.referrer

i know, it's not full query with url, but it's referrer.

P.s. Would you like, that any page would be able to check where you've been before? Some pages use authentication via url, so anyone would be able to grab those links from your browser's history.

来源：https://stackoverflow.com/questions/23682718/javascript-document-referrer-with-full-querystring