This article explains how to set up a simple local testing server on your machine, and the basics of how to use it.

Local files vs. remote files

Throughout most of the learning area, we tell you to just open your examples directly in a browser — this can be done by double-clicking the HTML file, dragging and dropping it into the browser window, or choosing File > Open… and navigating to the HTML file. There are many ways to achieve this.

If the web address path starts with file:// followed by the path to the file on your local hard drive, a local ...