Once you've downloaded the code you need to use a local web server to serve the files to your browser, opening the html directly from the file system will not work due to CORS. One of the easiest ways to setup a local web server is to use NodeJS.
Run the below commands in NodeJS to enable web server
- npm install -g http-server
- http-server
It will provide you the couple of web server address. Access the URL and navigate to your directory and click on the HTML file to launch the application
The example uses HTML5 local storage (localStorage) for storing the users