Location: ancestorOrigins - Web APIs
the ancestororigins read-only property of the location interface is a static domstringlist containing, in reverse order, the origins of all ancestor browsing contexts of the document associated with the given location object.
... you can use location.ancestororigins in the script for a document to determine, for example, whenever the document is being framed by a site which you don’t expect it to be framed by.
... syntax const ancestors = location.ancestororigins; specifications specification status comment html living standardthe definition of 'ancestororigins ' in that specification.

Location - Web APIs
node.addeventlistener("click", function(e) { e.preventdefault(); e.stoppropagation(); window.location.hash = '#' + $(this).attr('id'); }); }); [].foreach.call(document.queryselectorall('[title]'), function (node) { node.addeventlistener("click", function(e) { e.preventdefault(); e.stoppropagation(); window.location.hash = ''; }); }); result properties location.ancestororigins is a static domstringlist containing, in reverse order, the origins of all ancestor browsing contexts of the document associated with the given location object.