All docs
V20.1
24.2
The page you are viewing does not exist in version 24.2.
24.1
The page you are viewing does not exist in version 24.1.
23.2
The page you are viewing does not exist in version 23.2.
23.1
The page you are viewing does not exist in version 23.1.
22.2
The page you are viewing does not exist in version 22.2.
22.1
The page you are viewing does not exist in version 22.1.
21.2
The page you are viewing does not exist in version 21.2.
21.1
20.2
20.1
19.2
The page you are viewing does not exist in version 19.2.
19.1
The page you are viewing does not exist in version 19.1.
18.2
The page you are viewing does not exist in version 18.2.
18.1
The page you are viewing does not exist in version 18.1.
17.2
The page you are viewing does not exist in version 17.2.
A newer version of this page is available. Switch to the current version.

jQuery/JS Common - Object Structures - FileSystemItem - Methods

This section describes methods that you can use to change a file system item in code.

getFileExtension()

Gets a file's extension.

Return Value:

String

The file's extension.