[Google Maps API v2] Re: addlisterner closure problem looping through encoded polylines

On Jan 11, 11:47 am, somecallmemike <somecallmem...@gmail.com> wrote:
> I am trying to loop through a number of encoded polylines and assign a
> GEvent.addlistener that catches a mouseover event and appends some
> html to a div.  Unfortunately every span I mouseover gives the result
> of the last span that was in the loop.  I have researched it enough to
> understand it has something to do with closures, which is as far as my
> knowledge takes me.
>
> Here is my loop:

Where is your map?
(Did you read the posting guidelines?)

You already know the answer, have you looked at Mike Williams'
tutorial? It has explanations and examples.

-- Larry

>
>         GDownloadUrl("network/gen_span_xml.php", function(data) {
>           var xml = GXml.parse(data);
>           var spans = xml.documentElement.getElementsByTagName("span");
>           for (var i = 0; i < spans.length; i++) {
>             var span_id = spans[i].getAttribute("id");
>             var encoded_span = spans[i].getAttribute("encoded");
>             var encoded_levels = spans[i].getAttribute("levels");
>             var encoded_zoom_factor =
> spans[i].getAttribute("zoom_factor");
>             var encoded_num_levels =
> spans[i].getAttribute("num_levels");
>             var encodedPolyline = new GPolyline.fromEncoded({
>               color: '#0055ff',
>               weight: 4,
>               opacity: .5,
>               points: encoded_span,
>               levels: encoded_levels,
>               zoomFactor: encoded_zoom_factor,
>               numLevels: encoded_num_levels
>             });
>             GEvent.addListener(encodedPolyline, 'mouseover',
> function() {
>               $("#alertDiv").empty().append(span_id);
>             });
>             map.addOverlay(encodedPolyline);
>           }
>         });
>
> Thanks in advance.

--
You received this message because you are subscribed to the Google Groups "Google Maps API V2" group.
To post to this group, send email to google-maps-api@googlegroups.com.
To unsubscribe from this group, send email to google-maps-api+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/google-maps-api?hl=en.