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Add Heading Changed Event Listener on Maps

In this example you will learn how to add Heading Changed Event Listener to google map. This event fires when the map heading property changes.

Here you can view the output of the example and you can also "try it yourself" by clicking on "Live Demo" button given at the bottom.

Syntax

//Adding heading_changed event listener here
  map.addListener('heading_changed', function() {  
    document.getElementById('panel').innerHTML  = 'Heading Changed Event';
    window.setTimeout(function() {  
      document.getElementById('panel').innerHTML = '';
    }, 2000);  
  }); 

Add Heading Changed Event Listener on Maps Example

<!DOCTYPE html>  
<html>  
  <head>  <!-- www.techstrikers.com -->  
    <title>Heading Changed Event</title>  
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">  
    <meta charset="utf-8">  
    <style>  
      html, body {  
        height: 100%;  
        margin: 0;  
        padding: 0;  
      }  
      #map {  
        height: 99%;
        width: 99%;
      }
#panel {    
  position: absolute;    
  top: 230px;    
  left: 40%;    
  z-index: 5;    
  padding: 0px;    
  border: 0px solid #999;    
  text-align: center; 
  background:#0000FF;
  width:150px;
  color:#fff;
}    
 
#panel, .panel {    
  font-family: 'Roboto','sans-serif';    
  line-height: 30px;    
  padding-left: 10px;    
}    
  
#panel select, #panel input, .panel select, .panel input {    
  font-size: 15px;    
}    
  
#panel select, .panel select {    
  width: 100%;    
}    
  
#panel i, .panel i {    
  font-size: 12px;    
} 
    </style>  
    
    <script src="https://maps.googleapis.com/maps/api/js?signed_in=true&callback=initMap" async defer>  
    </script>  
    <script>  
function initMap() {  
  var lat_lng = {lat: 22.08672, lng: 79.42444};   
  
  var map = new google.maps.Map(document.getElementById('map'), {  
    zoom: 6,  
    center: lat_lng  
  });  
  //Adding heading_changed event listener here
  map.addListener('heading_changed', function() {  
    document.getElementById('panel').innerHTML  = 'Heading Changed Event';
    window.setTimeout(function() {  
      document.getElementById('panel').innerHTML = '';
    }, 2000);  
  });  
}  
  </script>  
  </head>  
  <body> 
    <div id="panel"></div>
    <div id="map"></div>  
  </body>  
</html>

Above example will produce following output