javascript - Is document.referrer cross browser compatable? -

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i'd use document.referrer informal referrer check. element cross brower compatible? browser throw error when trying reference document object?

the document.referrer property described in dom spec:

http://www.w3.org/tr/dom-level-2-html/html.html#id-95229140

so should supported cross-browser. however, can detect if implementation support property like

if( 'referrer' in document ) {      console.log(document.referrer); }

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