> Thanks to remind me my mistake about Point, I solve it but the problem still
> remains and markers create a new lat lang in the table when I drag them.
You need to get a javascript debugger, it'd be a lot quicker for you
to find your own problems when javascript errors are reported.
On page load, there's a javascript error "point is not defined" in
this line
document.getElementById("cLat").innerHTML = point.lat().toFixed
(5);
in your map load() function.
'point' hasn't been defined at this time, in this scope.
The code is all a bit muddled here,
GEvent.addListener(map, 'click', function(overlay, latlng) {
...
map.addOverlay(marker);
markers.push(marker);
Okay so far, we've put a click listener on the map to make a new
marker
GEvent.addListener(marker, 'dragend', function(){
geocoder.getLocations(marker.getLatLng(), showAddress)});
Okay, when we make that new marker we will add a dragend listener.
When a dragend does occur, that will reverse geocode the new location
and run showAddress(). That's all that happens at dragend, the
listener is closed with the }).
geocoder.getLocations(latlng, showAddress);});
Now (while doing the make-new-marker thing in the map-click routine
still) we'll reverse geocode the click location and rund run
showAddress() on it. That's all that happens on map-click, the
listener is closed at }).
document.getElementById("cLat").innerHTML = point.lat().toFixed(5);
document.getElementById("cLng").innerHTML = point.lng().toFixed
(5); }}
These are trying to run in the map load() function, before any clicks
or drags.
'point' hasn't been created anywhere yet. Are they supposed to be
there at all?
----
Anyway, the key thing is that your showAddress() routine is the thing
that populates the table, on a click or on a drag.
It uses a global variable row_no to decide where to put the new
information.
Then it increments row_no.
If I read you right, on a dragend, you don't want a new row, you want
to overwrite the last one.
I don't know anything about this data visualisation thing you are
using, but thats the part you need to alter.
What happens if you set the row pointer back one at a dragend, like
this -
GEvent.addListener(marker, 'dragend', function(){
--row_no;
geocoder.getLocations(marker.getLatLng(), showAddress);
});
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