Google Map API V3-2张地图上的infowindows @标记

Question

I am working on a Google Map API V3 code, I am a beginner in JS and I am a little bit confused.

Here is what I am trying to do : I have a database with Lat/Lng, address, a picture, a description.... etc

On my final page, i have 2 maps, one for France, one for Paris. If the lat/lng is in Paris, the marker is on Paris' map, if it's outside paris, it goes on the France map.

So far, I've done exactly what i wanted, but i'm stuck on the infoWindow :( I can open them, but can't close them automatically... I just want to have one infowindow opened at the same time.

Here is my code (just the JS part) :

("mapidf" is for Paris and "mapfr" is for France, and i've removed my attempts with the infowindow which didn't work)

function CreateMarker(marker, map, infowindow, description)
    {
        google.maps.event.addListener(marker, 'click');
        marker.setMap(map);
    }



function initialize(ListeDesPoints) {
    var mapidfOptions = {
          center: { lat: 48.856614, lng: 2.352222},
          zoom: 11
        };
    var mapfrOptions = {
          center: { lat: 46.227638, lng: 2.213749},
          zoom: 5
        };

     var mapidf = new google.maps.Map(document.getElementById('maps-idf'),
            mapidfOptions);

     var mapfr = new google.maps.Map(document.getElementById('maps-fr'),
            mapfrOptions);


    var infowindow = new Array();
    var marker = new Array();

    for (var i = 0; i < ListeDesPoints.length; i++)
        {

                marker[i] = new google.maps.Marker({
                                        position: new google.maps.LatLng (ListeDesPoints[i]['lat'], ListeDesPoints[i]['lng']),
                                        title: ListeDesPoints[i]['address']
                                 });
                var max_lat = 48.9602260;
                var min_lat = 48.7451930;
                var max_lng = 2.6327379;
                var min_lng = 2.0946256;
                        if(ListeDesPoints[i]['lat'] > max_lat || ListeDesPoints[i]['lat'] < min_lat || ListeDesPoints[i]['lng'] > max_lng || ListeDesPoints[i]['lng'] < min_lng)
                            {
                                var map = mapfr;
                            }
                        else
                            {
                                var map = mapidf;
                            }
                infowindow[i] = new google.maps.InfoWindow({content:""})
                var description = '<h2>'+ ListeDesPoints[i]['address']+'</h2><img src="'+ListeDesPoints[i]['image']+'" />';


                CreateMarker(marker[i], map, infowindow[i], description);
        }


}

It's possible that you notice other things I did wrong... please, feel free to criticizes this piece of code :)

Thank you very much

Answer 1

Probably the easiest way would be to create a single instance of info window and reuse it for all the markers as demonstrated below:

var infowindow = new google.maps.InfoWindow({});
var marker = new Array();

for (var i = 0; i < data.length; i++) {

      marker[i] = new google.maps.Marker({
           position: new google.maps.LatLng(data[i]['lat'], data[i]['lng']),
           title: data[i]['address'],
           map: map
      });

      google.maps.event.addListener(marker, 'click', function () {
          infowindow.setContent('Some content goes here');
          infowindow.open(map);
      });

}

According to Info Windows :

Best practices: For the best user experience, only one info window should be open on the map at any one time. Multiple info windows make the map appear cluttered. If you only need one info window at a time, you can create just one InfoWindow object and open it at different locations or markers upon map events, such as user clicks. If you do need more than one info window, you can display multiple InfoWindow objects at the same time.

In that case info window should automatically close when you click on a new marker without having to call the close() method .

JSFiddle: Modified example

Answer 2

If you want to have one marker per map, create a separate InfoWindow for each map, and associate it with the marker like you do the map.

for (var i = 0; i < ListeDesPoints.length; i++) {

    marker[i] = new google.maps.Marker({
        position: new google.maps.LatLng(ListeDesPoints[i]['lat'], ListeDesPoints[i]['lng']),
        title: ListeDesPoints[i]['address']
    });
    var max_lat = 48.9602260;
    var min_lat = 48.7451930;
    var max_lng = 2.6327379;
    var min_lng = 2.0946256;
    if (ListeDesPoints[i]['lat'] > max_lat || ListeDesPoints[i]['lat'] < min_lat || ListeDesPoints[i]['lng'] > max_lng || ListeDesPoints[i]['lng'] < min_lng) {
        var map = mapfr;
        var infowindow = infowindowfr;
    } else {
        var map = mapidf;
        var infowindow = infowindowidf;
    }
    //infowindow[i] = new google.maps.InfoWindow({ content: "" });
    var description = '<h2>' + ListeDesPoints[i]['address'] + '</h2><img src="' + ListeDesPoints[i]['image'] + '" />';


    CreateMarker(marker[i], map, infowindow, description);
}

proof of concept fiddle

code snippet:

 function CreateMarker(marker, map, infowindow, description) { marker.setMap(map); google.maps.event.addListener(marker, 'click', function() { infowindow.setContent(description); infowindow.open(map, this); }); } function initialize(ListeDesPoints) { var mapidfOptions = { center: { lat: 48.856614, lng: 2.352222 }, zoom: 11 }; var mapfrOptions = { center: { lat: 46.227638, lng: 2.213749 }, zoom: 5 }; var mapidf = new google.maps.Map(document.getElementById('maps-idf'), mapidfOptions); var mapfr = new google.maps.Map(document.getElementById('maps-fr'), mapfrOptions); //var infowindow = new Array(); var infowindowfr = new google.maps.InfoWindow({}); var infowindowidf = new google.maps.InfoWindow({}); var marker = new Array(); for (var i = 0; i < ListeDesPoints.length; i++) { marker[i] = new google.maps.Marker({ position: new google.maps.LatLng(ListeDesPoints[i]['lat'], ListeDesPoints[i]['lng']), title: ListeDesPoints[i]['address'] }); var max_lat = 48.9602260; var min_lat = 48.7451930; var max_lng = 2.6327379; var min_lng = 2.0946256; if (ListeDesPoints[i]['lat'] > max_lat || ListeDesPoints[i]['lat'] < min_lat || ListeDesPoints[i]['lng'] > max_lng || ListeDesPoints[i]['lng'] < min_lng) { var map = mapfr; var infowindow = infowindowfr; } else { var map = mapidf; var infowindow = infowindowidf; } //infowindow[i] = new google.maps.InfoWindow({ content: "" }); var description = '<h2>' + ListeDesPoints[i]['address'] + '</h2><img src="' + ListeDesPoints[i]['image'] + '" />'; CreateMarker(marker[i], map, infowindow, description); } } //Usage google.maps.event.addDomListener(window, 'load', function() { //1.load data var points = [{ 'lat': 48.856614, 'lng': 2.352222, 'address': 'Paris', 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}, { 'lat': 48.85837, 'lng': 2.294481, 'address': 'Eiffel Tower', 'image': 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initialize(points); }); 

 #maps-fr, #maps-idf { height: 240px; width: 640px; margin: 0px; padding: 0px; } 

 <script src="https://maps.googleapis.com/maps/api/js"></script> <div id="maps-fr"></div> <div id="maps-idf"></div>