This example creates a map that displays a window with the latitude, longitude, and world, pixel, and tile coordinates for Chicago, IL. It also shows how these values change as the zoom level is adjusted.
Read the documentation.
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-map-coordinates https://github.com/googlemaps/js-samples.git
Other samples can be tried by switching to any branch beginning with
git checkout sample-SAMPLE_NAME