Document.referrer - Web APIs 编辑

The Document.referrer property returns the URI of the page that linked to this page.

Syntax

var referrer = document.referrer;

Value

The value is an empty string if the user navigated to the page directly (not through a link, but, for example, by using a bookmark). Because this property returns only a string, it doesn't give you document object model (DOM) access to the referring page.

Inside an <iframe>, the Document.referrer will initially be set to the same value as the href of the parent window's Window.location.

Specifications

Browser compatibility

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