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Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

In the File System API, a FileSystemSync object represents a file system. It has two properties.

About this document

This document was last updated on March 2, 2012 and follows the W3C Specifications (Working Draft) drafted on April 19, 2011.

The specification is abandonned for the moment, failing to get significant traction.

Basic concepts

The FileSystemSync object is your gateway to the entire API and you will use it a lot. So once you have a reference, cache the object in a global variable or class property.

Attributes

Attribute Type Description
name readonly DOMString Name of the file system. The name must be unique across the list of exposed file systems.
root readonly DirectoryEntry The root directory of the file system.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
FileSystemSync
Non-standard
Chrome Full support 13
Prefixed
Full support 13
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Edge Full support ≤79
Prefixed
Full support ≤79
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Firefox No support NoIE No support NoOpera Full support 15
Prefixed
Full support 15
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Safari Full support 6
Prefixed
Full support 6
Prefixed
Prefixed Implemented with the vendor prefix: webkit
WebView Android Full support ≤37
Prefixed
Full support ≤37
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Chrome Android Full support 18
Prefixed
Full support 18
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Firefox Android No support NoOpera Android Full support 14
Prefixed
Full support 14
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Safari iOS Full support 6
Prefixed
Full support 6
Prefixed
Prefixed Implemented with the vendor prefix: webkit
Samsung Internet Android Full support 1.0
Prefixed
Full support 1.0
Prefixed
Prefixed Implemented with the vendor prefix: webkit
name
Non-standard
Chrome Full support 13Edge Full support ≤79Firefox No support NoIE No support NoOpera Full support 15Safari Full support 6WebView Android Full support ≤37Chrome Android Full support 18Firefox Android No support NoOpera Android Full support 14Safari iOS Full support 6Samsung Internet Android Full support 1.0
root
Non-standard
Chrome Full support 13Edge Full support ≤79Firefox No support NoIE No support NoOpera Full support 15Safari Full support 6WebView Android Full support ≤37Chrome Android Full support 18Firefox Android No support NoOpera Android Full support 14Safari iOS Full support 6Samsung Internet Android Full support 1.0

Legend

Full support  
Full support
No support  
No support
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.

See also

Specification:File API: Directories and System SpecificationWD

Reference: File System API

Introduction: Basic Concepts About the File System API

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