title: How to take the screenshot of part of Google Maps use JavaScript
body: <p>On my page, there is a container which use Google Maps API to display a map, there is a button below it, user can drag the map to a position, then click the button, I'd like to take the screenshot of the map displayed in the container now and show it in a canvas. Is it possible to do this with pure JavaScript?</p>
  
  <p>Just need to support Chrome</p>