# Configuring Source Folders

In order to limit the source files in the global scope of a JavaScript project, the JSDT supports specifying project source folders. By default the project root is a source folder, so for most instances no source folder configuration is necessary.

Depending on the kind of project, source is added to the global scope differently:

- For a JavaScript project, source files (and sub folders) from a the default source folder are all added to the global scope by default
- For an HTML project there are is no default source folder. In this case, HTML files have their own global scope that is a combination of libraries from the project and any source files included through HTML using the `<script src='...'>` tag.

Source folders can be easily configured on the JavaScript > Include Path properties page on the Source tab.