How can I open a preview?

Preview function is only available in the html/js/css stack.
A preview function allows you to preview the code without refreshing the browser as soon as the code is saved.
Select .html file and click the Open Preview button on the right.

How to view the result screen in the jsp stack

  1. 1.
    Run the code like a screen shot below.
  2. 2.
    Access the URL of the displayed area.

If your project is not html/js/css,

You can register a domain address at the top menu [Project] > [Running URL and Port] and check the output on the web via the registered URL.
Write URL and Port, and press the Register button. You cannot register multiple URLs to one port.