[Solved] Issue toggle on/off with infowindow

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You are creating the marker outside of the $.each. Unless you want more than one infowindow open at a time, it is better to make a global infowindow and reuse it. Also, you are overwriting the “marker” variable inside the $.each. Note that this wont work for more than one marker. You need to keep references to the markers in an array if you have more than one (the original example from which this code came toggled a single polyline). The code below works for me:

google.maps.event.addDomListener(buttonCarrosUI, 'click', function () {
    var data = JSON;
    var myLatLng;
    if (marker && marker.setMap) {
        if (marker.getMap() != null) marker.setMap(null);
        else marker.setMap(map_canvas);
    } else {
        $.each(data.markers, function (i, markerInfo) {
            myLatLng = new google.maps.LatLng(markerInfo.latitude, markerInfo.longitude);
            marker = new google.maps.Marker({
                position: myLatLng,
                map: map_canvas,
                title: markerInfo.title
            });
            google.maps.event.addListener(marker, 'click', function () {
                infowindow.setContent(marker.getTitle());
                infowindow.open(map_canvas, marker);
            });
        });

    }
});

working fiddle

2

solved Issue toggle on/off with infowindow