<iron-star-rating>
5-star rating element (Polymer 3.x)
<iron-star-rating></iron-star-rating>Install the Polymer-CLI
First, make sure you have the Polymer CLI installed. Then run polymer serve to serve your element locally.
Viewing Your Element
$ polymer serve
Running Tests
$ polymer test
Your application is already set up to be tested via web-component-tester. Run polymer test to run your application's test suite locally.