This example allows you to drag and drop GeoJSON onto the map. Download a sample GeoJSON file to test dragging from the device.
For more information about how to work with the map data layer, see the google.maps.Data class.
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-layer-data-dragndrop https://github.com/googlemaps/js-samples.git
Other samples can be tried by switching to any branch beginning with
git checkout sample-SAMPLE_NAME