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 FileSystem object represents a file system. The object is the argument of a successful callback of requestFileSystem(). The FileSystem object 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 draft is no more actively maintained, the specification is abandonned for the moment as it didn't get any significant traction.
Basic concepts
You request access to a sandboxed file system by calling window.requestFileSystem(). CallingrequestFileSystem()creates new storage for your web app.The argument of the a successful callback is the FileSystem object, which has two properties: the name and root of the file system.
The FileSystem 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
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 13webkit | Not supported | Not supported | Not supported | Not supported |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | Not supported | 0.16webkit | Not supported | Not supported | Not supported | Not supported |
See also
Specification:File API: Directories and System SpecificationWD
Reference: File System API
Introduction: Basic Concepts About the File System API