A really quick google revealed: Google maps and knockoutjs http://chadmullins.com/misc-php/knockout-series-three.php and perhaps most usefully: http://hoonzis.blogspot.co.uk/2012/03/knockoutjs-and-google-maps-binding.html.
Without further information I can’t be more specific.
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solved Adding Google Maps to an Html File and Using It With Knockouts [closed]