When you learn programming, there comes a time when you would like to add a graphical user interface to your programs. But it is not easy, especially for beginners, to choose among all the available frameworks.
After clicking the
run button, an URL will be displayed in the console. Open this URL in a web browser (simply click the URL, or copy/paste it, depending on the web browser you use).
head.html is put in the
head section of the HTML page of the application, and the
main.html, in the
index.js file which is executed by node.js.