How to search CSS / JavaScript files with Google?

Question

Is there a way to find CSS / JavaScript files that contain certain keywords:

• in the title ?
• in the code ?

Answer 1

Use the filetype: search operator.

• filetype:css
• filetype:js

However,

When you use the filetype: operator in a Google search (for example, filetype:xml galway), Google searches for files with the .xml extension, not for files of file type XML.

Not all URLs or pages have the .html file extension. Some pages (like http://www.google.com) have no extension at all, and some have an extension that doesn't match their file type. Limiting your search to a specific file type will return pages with that file extension, and may return fewer relevant results.

Source.