The getDirectoryHandle() method of the FileSystemDirectoryHandle interface returns a FileSystemDirectoryHandle for a subdirectory with the specified name within the directory handle on which the method is called.

name

A string representing the FileSystemHandle.name of the subdirectory you wish to retrieve.

options Optional

An optional object containing options for the retrieved subdirectory. Options are as follows:

create

A boolean value, which defaults to false. When set to true if the directory is not found, one with the specified name will be created and returned.

A Promise which resolves with a FileSystemDirectoryHandle.

NotAllowedError DOMException

Thrown if PermissionStatus is not 'granted'.

TypeError

Thrown if the name specified is not a valid string or contains characters that would interfere with the native file system.

TypeMismatchError DOMException

Thrown if the returned entry is a file and not a directory.

NotFoundError DOMException

Thrown if directory doesn't exist and the create option is set to false.

The following example returns a directory handle with the specified name, if the directory does not exist it is created.

const dirName = "directoryToGetName";

// assuming we have a directory handle: 'currentDirHandle'
const subDir = currentDirHandle.getDirectoryHandle(dirName, { create: true });

• File System API
• The File System Access API: simplifying access to local files