This is a basic example how you can use yandex map API
$ git clone https://github.com/Pitmov/geofeedback.git
$ cd geofeedback
$ npm install
$ cd nodejs
$ node server.jsAfter that start your favorite webserver, open html/index.html and try! Good luck! I hope everything is working :)
P.S. You need installed node.js and npm to work with this project.