The Place ID Finder sample allows a user to find a place based upon its address, then it adds a marker for the place to the map, and displays the place's place ID in an info window.
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-places-placeid-finder https://github.com/googlemaps/js-samples.git
Other samples can be tried by switching to any branch beginning with
git checkout sample-SAMPLE_NAME