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Javascript Google Maps JS API v3-简单的多标记示例

javascript google-maps google-maps-api-3

Javascript Google Maps JS API v3-简单的多标记示例,javascript,google-maps,google-maps-api-3,Javascript,Google Maps,Google Maps Api 3,对谷歌地图Api来说是相当新的。我有一个数组的数据，我想循环通过并绘制在地图上。看起来相当简单，但我发现的所有多标记教程都相当复杂 让我们以谷歌网站上的数据数组为例： var locations = [ ['Bondi Beach', -33.890542, 151.274856, 4], ['Coogee Beach', -33.923036, 151.259052, 5], ['Cronulla Beach', -34.028249, 151.157507, 3], ['Ma

对谷歌地图Api来说是相当新的。我有一个数组的数据，我想循环通过并绘制在地图上。看起来相当简单，但我发现的所有多标记教程都相当复杂

让我们以谷歌网站上的数据数组为例：

var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4],
  ['Coogee Beach', -33.923036, 151.259052, 5],
  ['Cronulla Beach', -34.028249, 151.157507, 3],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
  ['Maroubra Beach', -33.950198, 151.259302, 1]
];
我只想绘制所有这些点，并在单击以显示名称时弹出一个信息窗口。

这是我可以将其简化为以下内容的最简单方法：

<!DOCTYPE html>
<html> 
<head> 
  <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> 
  <title>Google Maps Multiple Markers</title> 
  <script src="http://maps.google.com/maps/api/js?sensor=false" 
          type="text/javascript"></script>
</head> 
<body>
  <div id="map" style="width: 500px; height: 400px;"></div>

  <script type="text/javascript">
    var locations = [
      ['Bondi Beach', -33.890542, 151.274856, 4],
      ['Coogee Beach', -33.923036, 151.259052, 5],
      ['Cronulla Beach', -34.028249, 151.157507, 3],
      ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
      ['Maroubra Beach', -33.950198, 151.259302, 1]
    ];

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 10,
      center: new google.maps.LatLng(-33.92, 151.25),
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

    var infowindow = new google.maps.InfoWindow();

    var marker, i;

    for (i = 0; i < locations.length; i++) {  
      marker = new google.maps.Marker({
        position: new google.maps.LatLng(locations[i][1], locations[i][2]),
        map: map
      });

      google.maps.event.addListener(marker, 'click', (function(marker, i) {
        return function() {
          infowindow.setContent(locations[i][0]);
          infowindow.open(map, marker);
        }
      })(marker, i));
    }
  </script>
</body>
</html>


谷歌地图多个标记
变量位置=[
[Bondi Beach'，-33.890542151.274856，4]，
[Coogee Beach'，-33.923036151.259052,5]，
[Cronulla Beach'，-34.028249151.157507,3]，
[‘曼利海滩’，-33.80010128657071151.28747820854187，2]，
[‘马鲁布拉海滩’，-33.950198151.259302，1]
];
var map=new google.maps.map（document.getElementById（'map'）{
缩放：10，
中心：新谷歌地图LatLng（-33.92151.25），
mapTypeId:google.maps.mapTypeId.ROADMAP
});
var infowindow=new google.maps.infowindow（）；
var标记，i；
对于（i=0；i
发件人：

函数初始化（）{
变量myOptions={
缩放：10，
中心：新google.maps.LatLng（-33.9151.2），
mapTypeId:google.maps.mapTypeId.ROADMAP
}
var map=new google.maps.map（document.getElementById（“map_canvas”），
肌肽）；
设置标记（地图、海滩）；
}
/**
*标记的数据由名称、板条和zIndex组成
*这些标记在每个标记顶部的显示顺序
*其他的。
*/
var海滩=[
[Bondi Beach'，-33.890542151.274856，4]，
[Coogee Beach'，-33.923036151.259052,5]，
[Cronulla Beach'，-34.028249151.157507,3]，
[‘曼利海滩’，-33.80010128657071151.28747820854187，2]，
[‘马鲁布拉海滩’，-33.950198151.259302，1]
];
功能设置标记（地图、位置）{
//向地图添加标记
//标记大小表示为X，Y的大小
//图像（0,0）的原点所在的位置
//在图像的左上角。
//标记的原点、锚定位置和坐标
//沿X方向向右和向内增加
//Y方向向下。
var image=new google.maps.MarkerImage（'images/beachflag.png'，
//此标记宽20像素，高32像素。
新谷歌地图大小（20,32），
//此图像的原点为0,0。
新google.maps.Point（0,0），
//此图像的锚定位于旗杆底部0,32处。
新的google.maps.Point（0,32））；
var shadow=new google.maps.MarkerImage（'images/beachflag_shadow.png'，
//阴影图像在水平维度上更大
//而位置和偏移量与主图像相同。
新谷歌地图大小（37,32），
新google.maps.Point（0,0），
新的google.maps.Point（0,32））；
//形状定义图标的可单击区域。
//该类型定义了一个HTML区域元素“poly”，该元素
//将多边形绘制为一系列X、Y点。最终
//坐标通过连接到第一个多边形来关闭多边形
//协调。
变量形状={
坐标：[1,1,1,20,18,20,18,1]，
类型：“poly”
};
对于（变量i=0；i
这里是另一个使用唯一的
标题和
信息窗口
文本加载多个标记的示例。使用最新的谷歌地图API V3.11进行测试


<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
        <title>Multiple Markers Google Maps</title>
        <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
        <script src="https://maps.googleapis.com/maps/api/js?v=3.11&sensor=false" type="text/javascript"></script>
        <script type="text/javascript">
        // check DOM Ready
        $(document).ready(function() {
            // execute
            (function() {
                // map options
                var options = {
                    zoom: 5,
                    center: new google.maps.LatLng(39.909736, -98.522109), // centered US
                    mapTypeId: google.maps.MapTypeId.TERRAIN,
                    mapTypeControl: false
                };

                // init map
                var map = new google.maps.Map(document.getElementById('map_canvas'), options);

                // NY and CA sample Lat / Lng
                var southWest = new google.maps.LatLng(40.744656, -74.005966);
                var northEast = new google.maps.LatLng(34.052234, -118.243685);
                var lngSpan = northEast.lng() - southWest.lng();
                var latSpan = northEast.lat() - southWest.lat();

                // set multiple marker
                for (var i = 0; i < 250; i++) {
                    // init markers
                    var marker = new google.maps.Marker({
                        position: new google.maps.LatLng(southWest.lat() + latSpan * Math.random(), southWest.lng() + lngSpan * Math.random()),
                        map: map,
                        title: 'Click Me ' + i
                    });

                    // process multiple info windows
                    (function(marker, i) {
                        // add click event
                        google.maps.event.addListener(marker, 'click', function() {
                            infowindow = new google.maps.InfoWindow({
                                content: 'Hello, World!!'
                            });
                            infowindow.open(map, marker);
                        });
                    })(marker, i);
                }
            })();
        });
        </script>
    </head>
    <body>
        <div id="map_canvas" style="width: 800px; height:500px;"></div>
    </body>
</html>




多标记谷歌地图
//检查DOM就绪
$（文档）.ready（函数（）{
//执行
（功能（）{
//地图选项
变量选项={
缩放：5，
中心：新的google.maps.LatLng（39.909736，-98.522109），//以我们为中心
mapTypeId:google.maps.mapTypeId.TERRAIN，
mapTypeControl:false
};
//初始映射
var map=new google.maps.map（document.getElementById（'map_canvas'），选项）；
//纽约和加利福尼亚州Lat/Lng样品
var西南=新google.maps.LatLng（40.744656，-74.005966）；
var northEast=新的google.maps.LatLng（34.052234，-118.243685）；
var lngSpan=northEast.lng（）-soutwest.lng（）；
var latSpan=northEast.lat（）-soutwest.lat（）；
//设置多个标记
对于（变量i=0；i<250；i++）{
//初始标记
var marker=new google.maps.marker({
位置：新的google.maps.LatLng（soutwest.lat（）+latSpan*Math.random（），soutwest.lng（）+lngSpan*Math.random（）），
地图：地图，
标题：“点击我”+i
});
//处理多个信息窗口
（功能（标记器，i）{
//添加单击事件
google.maps.event.addListener（标记'click'，函数（）{
infowindow=新建google.maps.infowindow({
内容：“你好，世界！！”
});

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
        <title>Multiple Markers Google Maps</title>
        <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
        <script src="https://maps.googleapis.com/maps/api/js?v=3.11&sensor=false" type="text/javascript"></script>
        <script type="text/javascript">
        // check DOM Ready
        $(document).ready(function() {
            // execute
            (function() {
                // map options
                var options = {
                    zoom: 5,
                    center: new google.maps.LatLng(39.909736, -98.522109), // centered US
                    mapTypeId: google.maps.MapTypeId.TERRAIN,
                    mapTypeControl: false
                };

                // init map
                var map = new google.maps.Map(document.getElementById('map_canvas'), options);

                // NY and CA sample Lat / Lng
                var southWest = new google.maps.LatLng(40.744656, -74.005966);
                var northEast = new google.maps.LatLng(34.052234, -118.243685);
                var lngSpan = northEast.lng() - southWest.lng();
                var latSpan = northEast.lat() - southWest.lat();

                // set multiple marker
                for (var i = 0; i < 250; i++) {
                    // init markers
                    var marker = new google.maps.Marker({
                        position: new google.maps.LatLng(southWest.lat() + latSpan * Math.random(), southWest.lng() + lngSpan * Math.random()),
                        map: map,
                        title: 'Click Me ' + i
                    });

                    // process multiple info windows
                    (function(marker, i) {
                        // add click event
                        google.maps.event.addListener(marker, 'click', function() {
                            infowindow = new google.maps.InfoWindow({
                                content: 'Hello, World!!'
                            });
                            infowindow.open(map, marker);
                        });
                    })(marker, i);
                }
            })();
        });
        </script>
    </head>
    <body>
        <div id="map_canvas" style="width: 800px; height:500px;"></div>
    </body>
</html>



var arr = new Array();
    function initialize() { 
        var i;  
        var Locations = [
                {
                  lat:48.856614, 
                  lon:2.3522219000000177, 
                  address:'Paris',
                  gval:'25.5',
                  aType:'Non-Commodity',
                  title:'Paris',
                  descr:'Paris'           
                },        
                    {
                  lat: 55.7512419, 
                  lon: 37.6184217,
                  address:'Moscow',
                  gval:'11.5',
                  aType:'Non-Commodity',
                  title:'Moscow',
                  descr:'Moscow Airport'              
                },     

                {
              lat:-9.481553000000002, 
              lon:147.190242, 
              address:'Port Moresby',
              gval:'1',
              aType:'Oil',
              title:'Papua New Guinea',
              descr:'Papua New Guinea 123123123'              
            },
            {
           lat:20.5200,
           lon:77.7500,
           address:'Indore',
            gval:'1',
            aType:'Oil',
            title:'Indore, India',
            descr:'Airport India'
        }
    ];

    var myOptions = {
        zoom: 2,
        center: new google.maps.LatLng(51.9000,8.4731),
        mapTypeId: google.maps.MapTypeId.ROADMAP
    };

    var map = new google.maps.Map(document.getElementById("map"), myOptions);

    var infowindow =  new google.maps.InfoWindow({
        content: ''
    });

    for (i = 0; i < Locations.length; i++) {
            size=15;        
            var img=new google.maps.MarkerImage('marker.png',           
                new google.maps.Size(size, size),
                new google.maps.Point(0,0),
                new google.maps.Point(size/2, size/2)
           );

        var marker = new google.maps.Marker({
            map: map,
            title: Locations[i].title,
            position: new google.maps.LatLng(Locations[i].lat, Locations[i].lon),           
                icon: img
        });

        bindInfoWindow(marker, map, infowindow, "<p>" + Locations[i].descr + "</p>",Locations[i].title);  

    }

}

function bindInfoWindow(marker, map, infowindow, html, Ltitle) { 
    google.maps.event.addListener(marker, 'mouseover', function() {
            infowindow.setContent(html); 
            infowindow.open(map, marker); 

    });
    google.maps.event.addListener(marker, 'mouseout', function() {
        infowindow.close();

    }); 
} 



<script type="text/javascript">
  function initialize() {
    var center = new google.maps.LatLng(37.4419, -122.1419);

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 3,
      center: center,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

    var markers = [];
    for (var i = 0; i < 100; i++) {
      var location = yourData.location[i];
      var latLng = new google.maps.LatLng(location.latitude,
          location.longitude);
      var marker = new google.maps.Marker({
        position: latLng
      });
      markers.push(marker);
    }
    var markerCluster = new MarkerClusterer(map, markers);
  }
  google.maps.event.addDomListener(window, 'load', initialize);
</script>



<script type="text/javascript">
  function initialize() {
    var locations = [
      ['Bondi Beach', -33.890542, 151.274856, 4],
      ['Coogee Beach', -33.923036, 151.259052, 5],
      ['Cronulla Beach', -34.028249, 151.157507, 3],
      ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
      ['Maroubra Beach', -33.950198, 151.259302, 1]
    ];

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 10,
      center: new google.maps.LatLng(-33.92, 151.25),
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

    var infowindow = new google.maps.InfoWindow();

    var marker, i;

    for (i = 0; i < locations.length; i++) {  
      marker = new google.maps.Marker({
        position: new google.maps.LatLng(locations[i][1], locations[i][2]),
        map: map
      });

      google.maps.event.addListener(marker, 'click', (function(marker, i) {
        return function() {
          infowindow.setContent(locations[i][0]);
          infowindow.open(map, marker);
        }
      })(marker, i));
    }
}

function loadScript() {
  var script = document.createElement('script');
  script.type = 'text/javascript';
  script.src = 'https://maps.googleapis.com/maps/api/js?v=3.exp&' +
      'callback=initialize';
  document.body.appendChild(script);
}

window.onload = loadScript;
  </script>



    var locations = [
      ['Bondi Beach', -33.890542, 151.274856, 4],
      ['Coogee Beach', -33.923036, 151.259052, 5],
      ['Cronulla Beach', -34.028249, 151.157507, 3],
      ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
      ['Maroubra Beach', -33.950198, 151.259302, 1]
    ];
    var map;
    var markers = [];

    function init(){
      map = new google.maps.Map(document.getElementById('map_canvas'), {
        zoom: 10,
        center: new google.maps.LatLng(-33.92, 151.25),
        mapTypeId: google.maps.MapTypeId.ROADMAP
      });

      var num_markers = locations.length;
      for (var i = 0; i < num_markers; i++) {  
        markers[i] = new google.maps.Marker({
          position: {lat:locations[i][1], lng:locations[i][2]},
          map: map,
          html: locations[i][0],
          id: i,
        });

        google.maps.event.addListener(markers[i], 'click', function(){
          var infowindow = new google.maps.InfoWindow({
            id: this.id,
            content:this.html,
            position:this.getPosition()
          });
          google.maps.event.addListenerOnce(infowindow, 'closeclick', function(){
            markers[this.id].setVisible(true);
          });
          this.setVisible(false);
          infowindow.open(map);
        });
      }
    }

google.maps.event.addDomListener(window, 'load', init);



var num_markers = locations.length;
for (var i = 0; i < num_markers; i++) {  
  markers[i] = new google.maps.Marker({
    position: {lat:locations[i][1], lng:locations[i][2]},
    map: map,
    html: locations[i][0],
    id: locations[i][3],
  });
};



var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4],
  ['Coogee Beach', -33.923036, 151.259052, 5],
  ['Cronulla Beach', -34.028249, 151.157507, 3],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
  ['Maroubra Beach', -33.950198, 151.259302, 1]
];

var map = new google.maps.Map(document.getElementById('map'), {
  center: new google.maps.LatLng(-33.92, 151.25)
});

for (i = 0; i < locations.length; i++) {  
  marker = new google.maps.Marker({
    position: new google.maps.LatLng(locations[i][1], locations[i][2]),
    map: map,
    data: {
      name: locations[i][0]
    }
  });
  marker.addListener('click', function() {
    if(!this.infoWindow) {
      this.infoWindow = new google.maps.InfoWindow({
        content: this.data.name;
      });
    }
    this.infoWindow.open(map,this);
  })
}



$(document).ready(() => {
  const mapEl = $('#our_map').get(0); // OR document.getElementById('our_map');

  // Display a map on the page
  const map = new google.maps.Map(mapEl, { mapTypeId: 'roadmap' });

  const buildings = [
    {
      title: 'London Eye, London', 
      coordinates: [51.503454, -0.119562],
      info: 'carousel'
    },
    {
      title: 'Palace of Westminster, London', 
      coordinates: [51.499633, -0.124755],
      info: 'palace'
    }
  ];

  placeBuildingsOnMap(buildings, map);
});


const placeBuildingsOnMap = (buildings, map) => {
  // Loop through our array of buildings & place each one on the map  
  const bounds = new google.maps.LatLngBounds();
  buildings.forEach((building) => {
    const position = { lat: building.coordinates[0], lng: building.coordinates[1] }
    // Stretch our bounds to the newly found marker position
    bounds.extend(position);

    const marker = new google.maps.Marker({
      position: position,
      map: map,
      title: building.title
    });

    const infoWindow = new google.maps.InfoWindow();
    // Allow each marker to have an info window
    google.maps.event.addListener(marker, 'click', () => {
      infoWindow.setContent(building.info);
      infoWindow.open(map, marker);
    })

    // Automatically center the map fitting all markers on the screen
    map.fitBounds(bounds);
  })
})



var marker = new google.maps.Marker({
  position: myLatLng,
  map: map,
  title: 'Hello World!'
});



<!DOCTYPE html>
<html>
<head>
   <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
   <meta charset="utf-8">
   <title>Simple markers</title>
<style>
  /* Always set the map height explicitly to define the size of the div
   * element that contains the map. */
  #map {
    height: 100%;
  }
  /* Optional: Makes the sample page fill the window. */
  html, body {
    height: 100%;
    margin: 0;
    padding: 0;
  }
</style>
</head>
<body>
 <div id="map"></div>
<script>

  function initMap() {
    var myLatLng = {lat: -25.363, lng: 131.044};

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 4,
      center: myLatLng
    });

    var marker = new google.maps.Marker({
      position: myLatLng,
      map: map,
      title: 'Hello World!'
    });
  }
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
</script>



var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4],
  ['Coogee Beach', -33.923036, 151.259052, 5],
  ['Cronulla Beach', -34.028249, 151.157507, 3],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
  ['Maroubra Beach', -33.950198, 151.259302, 1]
];

function initMap() {
  var myLatLng = {lat: -33.90, lng: 151.16};

  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 10,
    center: myLatLng
    });

  var count;

  for (count = 0; count < locations.length; count++) {  
    new google.maps.Marker({
      position: new google.maps.LatLng(locations[count][1], locations[count][2]),
      map: map,
      title: locations[count][0]
      });
   }
}



var marker = new google.maps.Marker({
    position: new google.maps.LatLng(locations[count][1], locations[count][2]),
    map: map
    });

marker.info = new google.maps.InfoWindow({
    content: 'Hello World!'
    });



var marker = new google.maps.Marker({
     position: new google.maps.LatLng(locations[count][1], locations[count][2]),
     map: map
     });

marker.info = new google.maps.InfoWindow({
     content: locations [count][0]
     });


google.maps.event.addListener(marker, 'click', function() {  
    // this = marker
    var marker_map = this.getMap();
    this.info.open(marker_map, this);
    // Note: If you call open() without passing a marker, the InfoWindow will use the position specified upon construction through the InfoWindowOptions object literal.
            });



<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Info windows</title>
    <style>
    /* Always set the map height explicitly to define the size of the div
    * element that contains the map. */
    #map {
        height: 100%;
    }
    /* Optional: Makes the sample page fill the window. */
    html, body {
        height: 100%;
        margin: 0;
        padding: 0;
    }
    </style>
</head>
<body>
    <div id="map"></div>
    <script>

    var locations = [
        ['Bondi Beach', -33.890542, 151.274856, 4],
        ['Coogee Beach', -33.923036, 151.259052, 5],
        ['Cronulla Beach', -34.028249, 151.157507, 3],
        ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
        ['Maroubra Beach', -33.950198, 151.259302, 1]
    ];


    // When the user clicks the marker, an info window opens.

    function initMap() {
        var myLatLng = {lat: -33.90, lng: 151.16};

        var map = new google.maps.Map(document.getElementById('map'), {
            zoom: 10,
            center: myLatLng
            });

        var count=0;


        for (count = 0; count < locations.length; count++) {  

            var marker = new google.maps.Marker({
                position: new google.maps.LatLng(locations[count][1], locations[count][2]),
                map: map
                });

            marker.info = new google.maps.InfoWindow({
                content: locations [count][0]
                });


            google.maps.event.addListener(marker, 'click', function() {  
                // this = marker
                var marker_map = this.getMap();
                this.info.open(marker_map, this);
                // Note: If you call open() without passing a marker, the InfoWindow will use the position specified upon construction through the InfoWindowOptions object literal.
                });
        }
    }
    </script>
    <script async defer
    src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
    </script>
</body>
</html>



    <!DOCTYPE html>
    <html>

    <head>
        <style>
            /*  <span class="metadata-marker" style="display: none;" data-region_tag="css"></span>       Set the size of the div element that contains the map */
            #map {
                height: 400px;
                /* The height is 400 pixels */
                width: 100%;
                /* The width is the width of the web page */
            }
        </style>
        <script>
            var map;
            var InforObj = [];
            var centerCords = {
                lat: -25.344,
                lng: 131.036
            };
            var markersOnMap = [{
                    placeName: "Australia (Uluru)",
                    LatLng: [{
                        lat: -25.344,
                        lng: 131.036
                    }]
                },
                {
                    placeName: "Australia (Melbourne)",
                    LatLng: [{
                        lat: -37.852086,
                        lng: 504.985963
                    }]
                },
                {
                    placeName: "Australia (Canberra)",
                    LatLng: [{
                        lat: -35.299085,
                        lng: 509.109615
                    }]
                },
                {
                    placeName: "Australia (Gold Coast)",
                    LatLng: [{
                        lat: -28.013044,
                        lng: 513.425586
                    }]
                },
                {
                    placeName: "Australia (Perth)",
                    LatLng: [{
                        lat: -31.951994,
                        lng: 475.858081
                    }]
                }
            ];

            window.onload = function () {
                initMap();
            };

            function addMarkerInfo() {
                for (var i = 0; i < markersOnMap.length; i++) {
                    var contentString = '<div id="content"><h1>' + markersOnMap[i].placeName +
                        '</h1><p>Lorem ipsum dolor sit amet, vix mutat posse suscipit id, vel ea tantas omittam detraxit.</p></div>';

                    const marker = new google.maps.Marker({
                        position: markersOnMap[i].LatLng[0],
                        map: map
                    });

                    const infowindow = new google.maps.InfoWindow({
                        content: contentString,
                        maxWidth: 200
                    });

                    marker.addListener('click', function () {
                        closeOtherInfo();
                        infowindow.open(marker.get('map'), marker);
                        InforObj[0] = infowindow;
                    });
                    // marker.addListener('mouseover', function () {
                    //     closeOtherInfo();
                    //     infowindow.open(marker.get('map'), marker);
                    //     InforObj[0] = infowindow;
                    // });
                    // marker.addListener('mouseout', function () {
                    //     closeOtherInfo();
                    //     infowindow.close();
                    //     InforObj[0] = infowindow;
                    // });
                }
            }

            function closeOtherInfo() {
                if (InforObj.length > 0) {
                    /* detach the info-window from the marker ... undocumented in the API docs */
                    InforObj[0].set("marker", null);
                    /* and close it */
                    InforObj[0].close();
                    /* blank the array */
                    InforObj.length = 0;
                }
            }

            function initMap() {
                map = new google.maps.Map(document.getElementById('map'), {
                    zoom: 4,
                    center: centerCords
                });
                addMarkerInfo();
            }
        </script>
    </head>

    <body>
        <h3>My Google Maps Demo</h3>
        <!--The div element for the map -->
        <div id="map"></div>

        <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY"></script>

    </body>

    </html>



import React from 'react';
import PropTypes from 'prop-types';
import { Map, InfoWindow, Marker, GoogleApiWrapper } from 'google-maps-react';

const MapContainer = (props) => {
  const [mapConfigurations, setMapConfigurations] = useState({
    showingInfoWindow: false,
    activeMarker: {},
    selectedPlace: {}
  });

  var points = [
    { lat: 42.02, lng: -77.01 },
    { lat: 42.03, lng: -77.02 },
    { lat: 41.03, lng: -77.04 },
    { lat: 42.05, lng: -77.02 }
  ]
  const onMarkerClick = (newProps, marker) => {};

  if (!props.google) {
    return <div>Loading...</div>;
  }

  return (
    <div className="custom-map-container">
      <Map
        style={{
          minWidth: '200px',
          minHeight: '140px',
          width: '100%',
          height: '100%',
          position: 'relative'
        }}
        initialCenter={{
          lat: 42.39,
          lng: -72.52
        }}
        google={props.google}
        zoom={16}
      >
        {points.map(coordinates => (
          <Marker
            position={{ lat: coordinates.lat, lng: coordinates.lng }}
            onClick={onMarkerClick}
            icon={{
              url: 'https://res.cloudinary.com/mybukka/image/upload/c_scale,r_50,w_30,h_30/v1580550858/yaiwq492u1lwuy2lb9ua.png',
            anchor: new google.maps.Point(32, 32), // eslint-disable-line
            scaledSize: new google.maps.Size(30, 30)  // eslint-disable-line
            }}
            name={name}
          />))}
        <InfoWindow
          marker={mapConfigurations.activeMarker}
          visible={mapConfigurations.showingInfoWindow}
        >
          <div>
            <h1>{mapConfigurations.selectedPlace.name}</h1>
          </div>
        </InfoWindow>
      </Map>
    </div>
  );
};

export default GoogleApiWrapper({
  apiKey: process.env.GOOGLE_API_KEY,
  v: '3'
})(MapContainer);

MapContainer.propTypes = {
  google: PropTypes.shape({}).isRequired,
};




<!DOCTYPE Html>
<html>

<head>
<meta Content-Security-Policy="default-src  'self'; script-src 'self' 'unsafe-eval' https://*/;">
<link type="text/css" href="http://www.mapsmarker.com/wp-content/uploads/leaflet-maps-marker-icons/bar_coktail.png">
<link rel="icon" href="data:,">
<title>App</title>
</head>
<style type="text/css">
   #map {
    height: 500
}
</style>

<body>
<div id='map' style="width:100%; height:400px"></div>
<script type='text/javascript'>
    function initMap() {
        maps = new google.maps.Map(document.getElementById('map'), {
            center: new google.maps.LatLng(12.9824855, 77.637094),
            zoom: 5,
            disableDefaultUI: false,
            mapTypeId: google.maps.MapTypeId.HYBRID
        });
        var labels='ABCDEFGHIJKLMNOPQRSTUVWXYZ';
        var markerImage = 'http://www.mapsmarker.com/wp-content/uploads/leaflet-maps-marker-icons/bar_coktail.png';
        marker = locations.map(function (location, i) {
            return new google.maps.Marker({
                position: new google.maps.LatLng(location.lat, location.lng),
                map: maps,
                title: "Map",
                label: labels[i % labels.length],
                icon: markerImage
            });
        });

        var markerCluster = new MarkerClusterer(maps, marker, {
            imagePath: 'https://developers.google.com/maps/documentation/javascript/examples/markerclusterer/m'
        });
    }
    var locations = [
            { lat: 12.9824855, lng: 77.637094},
            { lat: 11.9824855, lng: 77.154312 },
            { lat: 12.8824855, lng: 77.637094},
            { lat: 10.8824855, lng: 77.054312 },
            { lat: 12.9824855, lng: 77.637094},
            { lat: 11.9824855, lng: 77.154312 },
            { lat: 12.8824855, lng: 77.637094},
            { lat: 13.8824855, lng: 77.054312 },
            { lat: 14.9824855, lng: 54.637094},
            { lat: 15.9824855, lng: 54.154312 },
            { lat: 16.8824855, lng: 53.637094},
            { lat: 17.8824855, lng: 52.054312 },
            { lat: 18.9824855, lng: 51.637094},
            { lat: 19.9824855, lng: 69.154312 },
            { lat: 20.8824855, lng: 68.637094},
            { lat: 21.8824855, lng: 67.054312 },
            { lat: 12.9824855, lng: 76.637094},
            { lat: 11.9824855, lng: 75.154312 },
            { lat: 12.8824855, lng: 74.637094},
            { lat: 10.8824855, lng: 74.054312 },
            { lat: 12.9824855, lng: 73.637094},
            { lat: 3.9824855, lng: 72.154312 },
            { lat: 2.8824855, lng: 71.637094},
            { lat: 1.8824855, lng: 70.054312 }
        ];

</script>
<script src="https://unpkg.com/@google/markerclustererplus@4.0.1/dist/markerclustererplus.min.js">
</script>
<script src="https:maps.googleapis.com/maps/api/js?key=AIzaSyDWu6_Io9xA1oerfOxE77YAv31etN4u3Dw&callback=initMap">
</script>
<script type='text/javascript'></script>



<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>My Google Map</title>
    <style>
        #map{
            height: 600px;
            width: 100%;
        }
    </style>
</head>
<body>

<h1>My Google Map`</h1>
<div id="map"></div>


    <script>
        function initMap(){
          //Map options
            var options = {
                zoom:9,
                center:{lat:42.3601, lng:-71.0589}
            }
            // new map
            var map = new google.maps.Map(document.getElementById('map'), options);
            // customer marker
            var iconBase = 'https://maps.google.com/mapfiles/kml/shapes/parking_lot_maps.png';
            //array of Marrkeers
            var markers = [
              {
                coords:{lat: 42.4668, lng: -70.9495},img:iconBase,con:'<h3> This Is your Content <h3>'
              },
              {
                coords:{lat: 42.8584, lng: -70.9300},img:iconBase,con:'<h3> This Is your Content <h3>'
              },
              {
                coords:{lat: 42.7762, lng: -71.0773},img:iconBase,con:'<h3> This Is your Content <h3>'
              }
            ];

            //loopthrough markers
            for(var i = 0; i <markers.length; i++){
              //add markeers
              addMarker(markers[i]);
            }

            //function for the plotting markers on the map
            function addMarker (props){
              var marker = new google.maps.Marker({
                position: props.coords,
                map:map,
                icon:props.img
              });
              var infoWindow = new google.maps.InfoWindow({
                content:props.con,
              });
              marker.addListener("click", () => {
                infoWindow.open(map, marker);
              });
            }
        }
    </script>

    <script
      src="https://maps.googleapis.com/maps/api/js?key=**YourAPIKey**&callback=initMap"
      defer
    ></script>

</body>
</html>