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copied!<p>First, "this" in javascript is a bit tricky and depends on where the function was called, not just where it was defined.</p> <p>The quickest cross browser solution is to use a closure. Google actually has a great article on closures with google maps here. </p> <p><a href="http://code.google.com/intl/en/apis/maps/documentation/javascript/v2/events.html#Event_Closures" rel="nofollow">http://code.google.com/intl/en/apis/maps/documentation/javascript/v2/events.html#Event_Closures</a></p> <p>You have access to the GEvent.bind method, which you could use to reference your call back correctly.</p> <pre><code> GEvent.bind(map, "click", myCounter, myCounter.increment); </code></pre> <p>But I don't know how to implement that with direction route. Also, it may be deprecated with v2. Here is a better link to the maps v3</p> <p><a href="http://code.google.com/intl/en/apis/maps/documentation/javascript/events.html" rel="nofollow">http://code.google.com/intl/en/apis/maps/documentation/javascript/events.html</a></p> <p>So, maybe consider something like this:</p> <pre><code> var directionsRequest = { origin:from, destination:to, travelMode: google.maps.DirectionsTravelMode.DRIVING }; var that = this; var planRouteCallback = function(result,status){ if(status == google.maps.DirectionsStatus.OK) { that.directionsRenderer.setDirections(result); that.directionsRenderer.setMap(google_map_object); } else { that.handleErrors(status); } }, this.directionsService.route(directionsRequest, planRouteCallback); </code></pre> <p>Simple closures really help with callbacks.</p>

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