Manual:$wgExtensionAssetsPath

Server URLs and file paths: $wgExtensionAssetsPath
URL to extensions directory.
Introduced in version:1.16.0 (r60885)
Removed in version:still in use
Allowed values:(string)
Default value:{$wgScriptPath }/extensions
(Note: The default value of this variable depends on other variables, such as the values set in Setup.php , after LocalSettings.php is executed)

Details edit

URL to extensions directory, defaults to "{$wgScriptPath }/extensions".

Used to provide a base URL for extension assets like extension-specific images and scripts. Note the difference between $IP/extensions (points to the extensions directory on the server filesystem) and $wgScriptPath/extensions (points to the URL of the extensions directory).

See also edit