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HTML

              
                
<div class='container'>
  <div class='buttons'>
    <div class='btn' data-anim='pulse'> Shrink/Grow </div>
    <div class='btn' data-anim='wobble'> Wobble </div>
    <div class='btn' data-anim='flicker'> Flicker </div>
  </div>
  <div id="map"></div>
</div>
<script type="text/javascript" src="https://maps.google.com/maps/api/js?sensor=false"></script>

              
            
!

CSS

              
                .container{
  height:500px;
  width:100%;
  position: relative;
}

.buttons{
  position:absolute;
  top:4px;
  right: 8px;
  z-index:100;
}

.btn{
  display:inline-block;
  padding: 4px 8px;
  background-color:#ccc;
  border-radius:2px;
  float:left;
  border:1px solid #999;
  font-size:16px;
  cursor:pointer;
}

.btn:hover{
  background-color:#999;
  transition: 250ms;
}

#map{
  height:100%;
  width:100%;
}

/* This is where you plug in the CSS for marker animations */
#markerLayer img {
  animation: pulse .5s infinite alternate;
	-webkit-animation: pulse .5s infinite alternate;
	transform-origin: center;
	-webkit-transform-origin: center;
}


/* Animaitons */
keyframes pulse{
	to { 
		transform: scale(0.7);
		-webkit-transform: scale(0.7);  
	}
}

@-webkit-keyframes pulse{
	to { 
		transform: scale(0.7);
		-webkit-transform: scale(0.7);  
	}
}

@-webkit-keyframes wobble {
  from {
    -webkit-transform: none;
    transform: none;
  }

  15% {
    -webkit-transform: translate3d(-25%, 0, 0) rotate3d(0, 0, 1, -5deg);
    transform: translate3d(-25%, 0, 0) rotate3d(0, 0, 1, -5deg);
  }

  30% {
    -webkit-transform: translate3d(20%, 0, 0) rotate3d(0, 0, 1, 3deg);
    transform: translate3d(20%, 0, 0) rotate3d(0, 0, 1, 3deg);
  }

  45% {
    -webkit-transform: translate3d(-15%, 0, 0) rotate3d(0, 0, 1, -3deg);
    transform: translate3d(-15%, 0, 0) rotate3d(0, 0, 1, -3deg);
  }

  60% {
    -webkit-transform: translate3d(10%, 0, 0) rotate3d(0, 0, 1, 2deg);
    transform: translate3d(10%, 0, 0) rotate3d(0, 0, 1, 2deg);
  }

  75% {
    -webkit-transform: translate3d(-5%, 0, 0) rotate3d(0, 0, 1, -1deg);
    transform: translate3d(-5%, 0, 0) rotate3d(0, 0, 1, -1deg);
  }

  to {
    -webkit-transform: none;
    transform: none;
  }
}

@keyframes wobble {
  from {
    -webkit-transform: none;
    transform: none;
  }

  15% {
    -webkit-transform: translate3d(-25%, 0, 0) rotate3d(0, 0, 1, -5deg);
    transform: translate3d(-25%, 0, 0) rotate3d(0, 0, 1, -5deg);
  }

  30% {
    -webkit-transform: translate3d(20%, 0, 0) rotate3d(0, 0, 1, 3deg);
    transform: translate3d(20%, 0, 0) rotate3d(0, 0, 1, 3deg);
  }

  45% {
    -webkit-transform: translate3d(-15%, 0, 0) rotate3d(0, 0, 1, -3deg);
    transform: translate3d(-15%, 0, 0) rotate3d(0, 0, 1, -3deg);
  }

  60% {
    -webkit-transform: translate3d(10%, 0, 0) rotate3d(0, 0, 1, 2deg);
    transform: translate3d(10%, 0, 0) rotate3d(0, 0, 1, 2deg);
  }

  75% {
    -webkit-transform: translate3d(-5%, 0, 0) rotate3d(0, 0, 1, -1deg);
    transform: translate3d(-5%, 0, 0) rotate3d(0, 0, 1, -1deg);
  }

  to {
    -webkit-transform: none;
    transform: none;
  }
}

@-webkit-keyframes flicker {
  from, 50%, to {
    opacity: 1;
  }

  25%, 75% {
    opacity: 0;
  }
}

@keyframes flicker {
  from, 50%, to {
    opacity: 1;
  }

  25%, 75% {
    opacity: 0;
  }
}

body {margin: 0; padding: 0;}
              
            
!

JS

              
                $(document).ready(function(){
  
  var map;
  var markerArr=[];

  function initialize() {
    var mapOptions = {
      zoom: 9,
      mapTypeControl: false,
      center: new google.maps.LatLng(42.36, -71.06)
    };
    map = new google.maps.Map(document.getElementById('map'), mapOptions);

    // image from external URL
    var myIcon ='https://s3-us-west-2.amazonaws.com/s.cdpn.io/123941/cheshire1-icon.png';
    
    //preparing the image so it can be used as a marker
    //https://developers.google.com/maps/documentation/javascript/reference#Icon
    //includes hacky fix "size" to allow for wobble
    var catIcon = {
      url: myIcon,
      size: new google.maps.Size(100, 60),
      scaledSize: new google.maps.Size(70, 60),
      origin: new google.maps.Point(-15,0)
    }
    
    /*
    //If you want to do this without wobble animation no need for hacky fix
    var catIcon = {
      url: myIcon,
      size: new google.maps.Size(70, 60),
      scaledSize: new google.maps.Size(70, 60),
      origin: new google.maps.Point(0,0)
    }*/
    
    //gets GeoJSON from external file
    $.getJSON( "https://codepen.io/kevinkononenko/pen/dMKzgG.js", function(data) {
        var length= data.features.length
        for (var i=0; i < length; i++){
          var eachData = data.features[i].properties
          var latLng = new google.maps.LatLng(eachData.Latitude, eachData.Longitude);
          var marker = new google.maps.Marker({
              position:latLng,
              map: map,
              // set the icon as catIcon declared above
              icon: catIcon,
              // must use optimized false for CSS
              optimized: false,
              title: markerArr.length.toString()
          });
          markerArr.push(marker);
          
          //add a click handler that does nothing at the moment
          google.maps.event.addListener(marker, 'click', function() {
            var thisTitle= Number(this.title);
            //$('#markerLayer img').eq(thisTitle)
          })
          
        }
      });  
    
       // Overlay view allows you to organize your markers in the DOM
        // https://developers.google.com/maps/documentation/javascript/reference#OverlayView
       var myoverlay = new google.maps.OverlayView();
       myoverlay.draw = function () {
           // add an id to the layer that includes all the markers so you can use it in CSS
           this.getPanes().markerLayer.id='markerLayer';
       };
       myoverlay.setMap(map);
        
  }

  initialize();
  
  
  // use jQuery to change the markers animation based on toggle button
  $('.btn').click(function(){
    var type = $(this).data('anim');
    $('#markerLayer img').css('animation', type+ ' 1s infinite alternate');
    $('#markerLayer img').css('-webkit-animation', type+ ' 1s infinite alternate')
  })
  
});


              
            
!
999px

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