从外部url导航时，Document.referrer为空吗？ [英] Document.referrer empty when navigating from external url?

问题描述

我有以下代码：

  var previousPageUrl = document.referrer; 
 alert（previousPageUrl）;`
  

如果上一页的网址为任何外部网站，即不是我的申请。

例如：

如果我在第1页并转到我的应用程序的第2页，然后我将在第2页载入第1页的引荐来源网址，但是当我转到外部网站说www.google.com时，再次回到第1页时，我不会得到www。

解决方案

$ b

由于链接点击或基于JavaScript的导航，导航时通常会在不相关的网站之间传递参考网址。如果用户使用浏览器的Chrome（例如地址栏，后退/前进按钮/等）导航，则不会发送引用URL。

为了安全/隐私的原因，引用者从HTTPS站点导航到HTTP站点时（例如从 https://google.com 到http://example.com ）。它也可以通过各种JavaScript和HTML技巧故意剥离。没有办法禁用此行为以获取引荐网址（如果已被剥离）。

I have the following code:

var previousPageUrl= document.referrer;
alert(previousPageUrl);`

This will not work if the previous page url is of any external site, i.e., not of my application.

For example:

If I am in Page 1 and went to Page 2 of my application then I will get page 1 url in referrer in Page 2 load but when I go to external site say www.google.com then again when I come back to page 1 the I will not get www.google.com as referrer url.

Can Somebody tell to resove this issue.

解决方案

Generally, Referer URLs are passed between unrelated sites when navigation occurs due to a link click or JavaScript-based navigation. Referer URLs are NOT sent if the user uses the browser's chrome (e.g. address bar, back/forward buttons/etc) to navigate.

For security/privacy reasons, the Referer URL is stripped out when navigating from a HTTPS site to a HTTP site (e.g. from https://google.com to http://example.com). It can also be deliberately stripped out via a variety of JavaScript and HTML tricks. There is no way to disable this behavior to get the Referer URL if it has been stripped.

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