将鼠标悬停在一个点上可显示弹出图像

var map = AmCharts.makeChart("chartdiv", {
  "type": "map",
  "theme": "light",
  "projection": "mercator",

  "imagesSettings": {
    "rollOverColor": "#089282",
    "rollOverScale": 5,
    "selectedScale": 5,
    "selectedColor": "#089282",
    "color": "#13564e"
  },

  "areasSettings": {
    "unlistedAreasColor": "#15A892"
  },

  "dataProvider": {
    "map": "worldLow",
    "images": [{
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "Hawaii, USA",
      "latitude": 19.8968,
      "longitude": -155.5828,
      "pop": "pop0"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "Galápagos Islands",
      "latitude": -0.8675,
      "longitude": -89.4364,
      "pop": "pop1"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "Italy",
      "latitude": 41.9028,
      "longitude": 12.4964,
      "pop": "pop2"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "Greece",
      "latitude": 37.9838,
      "longitude": 23.7275,
      "pop": "pop3"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "The Bahamas",
      "latitude": 24.9314,
      "longitude": -76.1900,
      "pop": "pop4"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "South Florida, USA",
      "latitude": 26.1224,
      "longitude": -80.1373,
      "pop": "pop5"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "Canada",
      "latitude": 45.5017,
      "longitude": -73.5673,
      "pop": "pop6"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "Washington State, USA",
      "latitude": 47.6062,
      "longitude": -122.3321,
      "pop": "pop7"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "California, USA",
      "latitude": 34.0522,
      "longitude": -118.2437,
      "pop": "pop8"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "Illinois, USA",
      "latitude": 41.8781,
      "longitude": -87.6298,
      "pop": "pop9"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "Costa Rica",
      "latitude": 9.7489,
      "longitude": -83.7534,
      "pop": "pop10"
    }, {
      "zoomLevel": 5,
      "scale": 0.5,
      "title": "North Carolina, USA",
      "latitude": 35.7596,
      "longitude": -79.0193,
      "pop": "pop11"
    }]
  }
});


// add events to recalculate map position when the map is moved or zoomed
map.addListener("positionChanged", updateCustomMarkers);

// this function will take current images on the map and create HTML elements for them
function updateCustomMarkers(event) {
  // get map object
  var map = event.chart;

  // go through all of the images
  for (var x in map.dataProvider.images) {
    // get MapImage object
    var image = map.dataProvider.images[x];

    // check if it has corresponding HTML element
    if ('undefined' == typeof image.externalElement)
      image.externalElement = createCustomMarker(image);

    // reposition the element accoridng to coordinates
    var xy = map.coordinatesToStageXY(image.longitude, image.latitude);
    image.externalElement.style.top = xy.y + 'px';
    image.externalElement.style.left = xy.x + 'px';
  }
}

// this function creates and returns a new marker element
function createCustomMarker(image) {
  // create holder
  var holder = document.createElement('div');
  holder.className = 'map-marker';
  holder.title = image.title;
  holder.style.position = 'absolute';

  // maybe add a link to it?
  if (undefined != image.url) {
    holder.onclick = function() {
      window.location.href = image.url;
    };
    holder.className += ' map-clickable';
  }

  // create dot
  var dot = document.createElement('div');
  dot.className = 'dot';
  holder.appendChild(dot);

  // create pulse
  var pulse = document.createElement('div');
  pulse.className = 'pulse';
  holder.appendChild(pulse);

  // append the marker to the map container
  image.chart.chartDiv.appendChild(holder);


  //Mouseover listener
  var popup = document.getElementById(image.pop);
  holder.onmouseover = function() {
    popup.classList.add('popon');
  }
  holder.onmouseleave = function() {
    popup.classList.remove('popon');
  }

  return holder;
}

  #chartdiv {
  width: 100%;
  height: 500px;
}

.map-marker {
  /* adjusting for the marker dimensions
    so that it is centered on coordinates */
  margin-left: -8px;
  margin-top: -8px;
}

.map-marker.map-clickable {
  cursor: pointer;
}

.pulse {
  width: 10px;
  height: 10px;
  border: 3px solid #FFB6C1;
  -webkit-border-radius: 20px;
  -moz-border-radius: 20px;
  border-radius: 20px;
  background-color: #ff69b4;
  z-index: 10;
  position: absolute;
}

.map-marker .dot {
  border: 3px solid #ff69b4;
  background: transparent;
  -webkit-border-radius: 40px;
  -moz-border-radius: 40px;
  border-radius: 40px;
  height: 50px;
  width: 50px;
  -webkit-animation: pulse 3s ease-out;
  -moz-animation: pulse 3s ease-out;
  animation: pulse 3s ease-out;
  -webkit-animation-iteration-count: infinite;
  -moz-animation-iteration-count: infinite;
  animation-iteration-count: infinite;
  position: absolute;
  top: -20px;
  left: -20px;
  z-index: 1;
  opacity: 0;
}

.popup {
  display: none;
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
  background: red;
  width: 50px;
  height: 50px;
}

.popon {
  display: block;
}

@-moz-keyframes pulse {
  0% {
    -moz-transform: scale(0);
    opacity: 0.0;
  }
  25% {
    -moz-transform: scale(0);
    opacity: 0.1;
  }
  50% {
    -moz-transform: scale(0.1);
    opacity: 0.3;
  }
  75% {
    -moz-transform: scale(0.5);
    opacity: 0.5;
  }
  100% {
    -moz-transform: scale(1);
    opacity: 0.0;
  }
}

@-webkit-keyframes "pulse" {
  0% {
    -webkit-transform: scale(0);
    opacity: 0.0;
  }
  25% {
    -webkit-transform: scale(0);
    opacity: 0.1;
  }
  50% {
    -webkit-transform: scale(0.1);
    opacity: 0.3;
  }
  75% {
    -webkit-transform: scale(0.5);
    opacity: 0.5;
  }
  100% {
    -webkit-transform: scale(1);
    opacity: 0.0;
  }

<script src="https://www.amcharts.com/lib/3/ammap.js"></script>
<script src="https://www.amcharts.com/lib/3/maps/js/worldLow.js"></script>
<script src="https://www.amcharts.com/lib/3/plugins/export/export.min.js"></script>
<link rel="stylesheet" href="https://www.amcharts.com/lib/3/plugins/export/export.css" type="text/css" media="all" />
<script src="https://www.amcharts.com/lib/3/themes/light.js"></script>
<div id="chartdiv"></div>
<div id="pop0" class="popup">A</div>
<div id="pop1" class="popup">B</div>
<div id="pop2" class="popup">C</div>
<div id="pop3" class="popup">D</div>
<div id="pop4" class="popup">E</div>
<div id="pop5" class="popup">F</div>
<div id="pop6" class="popup">G</div>
<div id="pop7" class="popup">H</div>
<div id="pop8" class="popup">I</div>
<div id="pop9" class="popup">J</div>
<div id="pop10" class="popup">K</div>
<div id="pop11" class="popup">L</div>