Removing Overlays

This example creates a ground overlay on top of a map, and adds a UI control allowing users to remove the ground overlay from the map.

Read the documentation .

TypeScript

 // This example adds a UI control allowing users to remove the 
 // ground overlay from the map. 
 let 
  
 historicalOverlay 
 : 
  
 google.maps.GroundOverlay 
 ; 
 let 
  
 map 
 : 
  
 google.maps.Map 
 ; 
 function 
  
 initMap 
 () 
 : 
  
 void 
  
 { 
  
 map 
  
 = 
  
 new 
  
 google 
 . 
 maps 
 . 
 Map 
 ( 
 document 
 . 
 getElementById 
 ( 
 "map" 
 ) 
  
 as 
  
 HTMLElement 
 , 
  
 { 
  
 zoom 
 : 
  
 13 
 , 
  
 center 
 : 
  
 { 
  
 lat 
 : 
  
 40.74 
 , 
  
 lng 
 : 
  
 - 
 74.18 
  
 }, 
  
 }); 
  
 const 
  
 imageBounds 
  
 = 
  
 { 
  
 north 
 : 
  
 40.773941 
 , 
  
 south 
 : 
  
 40.712216 
 , 
  
 east 
 : 
  
 - 
 74.12544 
 , 
  
 west 
 : 
  
 - 
 74.22655 
 , 
  
 }; 
  
 historicalOverlay 
  
 = 
  
 new 
  
 google 
 . 
 maps 
 . 
 GroundOverlay 
 ( 
  
 "https://storage.googleapis.com/geo-devrel-public-buckets/newark_nj_1922-661x516.jpeg" 
 , 
  
 imageBounds 
  
 ); 
  
 // add event listener for click event 
  
 document 
  
 . 
 getElementById 
 ( 
 "restore-overlay" 
 ) 
 ! 
  
 . 
 addEventListener 
 ( 
 "click" 
 , 
  
 restoreOverlay 
 ); 
  
 document 
  
 . 
 getElementById 
 ( 
 "remove-overlay" 
 ) 
 ! 
  
 . 
 addEventListener 
 ( 
 "click" 
 , 
  
 removeOverlay 
 ); 
  
 // restore overlay to map 
  
 restoreOverlay 
 (); 
 } 
 function 
  
 restoreOverlay 
 () 
  
 { 
  
 historicalOverlay 
 . 
 setMap 
 ( 
 map 
 ); 
 } 
 function 
  
 removeOverlay 
 () 
  
 { 
  
 historicalOverlay 
 . 
 setMap 
 ( 
 null 
 ); 
 } 
 declare 
  
 global 
  
 { 
  
 interface 
  
 Window 
  
 { 
  
 initMap 
 : 
  
 () 
  
 = 
>  
 void 
 ; 
  
 } 
 } 
 window 
 . 
 initMap 
  
 = 
  
 initMap 
 ; 
  

JavaScript

 // This example adds a UI control allowing users to remove the 
 // ground overlay from the map. 
 let 
  
 historicalOverlay 
 ; 
 let 
  
 map 
 ; 
 function 
  
 initMap 
 () 
  
 { 
  
 map 
  
 = 
  
 new 
  
 google 
 . 
 maps 
 . 
 Map 
 ( 
 document 
 . 
 getElementById 
 ( 
 "map" 
 ), 
  
 { 
  
 zoom 
 : 
  
 13 
 , 
  
 center 
 : 
  
 { 
  
 lat 
 : 
  
 40.74 
 , 
  
 lng 
 : 
  
 - 
 74.18 
  
 }, 
  
 }); 
  
 const 
  
 imageBounds 
  
 = 
  
 { 
  
 north 
 : 
  
 40.773941 
 , 
  
 south 
 : 
  
 40.712216 
 , 
  
 east 
 : 
  
 - 
 74.12544 
 , 
  
 west 
 : 
  
 - 
 74.22655 
 , 
  
 }; 
  
 historicalOverlay 
  
 = 
  
 new 
  
 google 
 . 
 maps 
 . 
 GroundOverlay 
 ( 
  
 "https://storage.googleapis.com/geo-devrel-public-buckets/newark_nj_1922-661x516.jpeg" 
 , 
  
 imageBounds 
 , 
  
 ); 
  
 // add event listener for click event 
  
 document 
  
 . 
 getElementById 
 ( 
 "restore-overlay" 
 ) 
  
 . 
 addEventListener 
 ( 
 "click" 
 , 
  
 restoreOverlay 
 ); 
  
 document 
  
 . 
 getElementById 
 ( 
 "remove-overlay" 
 ) 
  
 . 
 addEventListener 
 ( 
 "click" 
 , 
  
 removeOverlay 
 ); 
  
 // restore overlay to map 
  
 restoreOverlay 
 (); 
 } 
 function 
  
 restoreOverlay 
 () 
  
 { 
  
 historicalOverlay 
 . 
 setMap 
 ( 
 map 
 ); 
 } 
 function 
  
 removeOverlay 
 () 
  
 { 
  
 historicalOverlay 
 . 
 setMap 
 ( 
 null 
 ); 
 } 
 window 
 . 
 initMap 
  
 = 
  
 initMap 
 ; 
  

CSS

 /* 
 * 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 
 ; 
 } 
 # 
 floating-panel 
  
 { 
  
 position 
 : 
  
 absolute 
 ; 
  
 top 
 : 
  
 10 
 px 
 ; 
  
 left 
 : 
  
 25 
 % 
 ; 
  
 z-index 
 : 
  
 5 
 ; 
  
 background-color 
 : 
  
 #fff 
 ; 
  
 padding 
 : 
  
 5 
 px 
 ; 
  
 border 
 : 
  
 1 
 px 
  
 solid 
  
 #999 
 ; 
  
 text-align 
 : 
  
 center 
 ; 
  
 font-family 
 : 
  
 "Roboto" 
 , 
  
 "sans-serif" 
 ; 
  
 line-height 
 : 
  
 30 
 px 
 ; 
  
 padding-left 
 : 
  
 10 
 px 
 ; 
 } 
  

HTML

<html>
  <head>
    <title>Removing Overlays</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="floating-panel">
      <input id="remove-overlay" type="button" value="Remove overlay" />
      <input id="restore-overlay" type="button" value="Restore overlay" />
    </div>
    <div id="map"></div>

    <!-- 
      The `defer` attribute causes the script to execute after the full HTML
      document has been parsed. For non-blocking uses, avoiding race conditions,
      and consistent behavior across browsers, consider loading using Promises. See
      https://developers.google.com/maps/documentation/javascript/load-maps-js-api
      for more information.
      -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"
      defer
    ></script>
  </body>
</html>  

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

  
  git 
  
 clone 
  
 - 
 b 
  
 sample 
 - 
 overlay 
 - 
 remove 
  
 https 
 : 
 //github.com/googlemaps/js-samples.git 
 
  
  cd 
  
 js 
 - 
 samples 
 
  
  npm 
  
 i 
 
  
  npm 
  
 start 
 

Other samples can be tried by switching to any branch beginning with sample- SAMPLE_NAME .

  
  git 
  
 checkout 
  
 sample 
 - 
  SAMPLE_NAME 
 
 
  
  npm 
  
 i 
 
  
  npm 
  
 start 
 
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