この記事はまだボランティアによって 日本語 に翻訳されていません。ぜひ MDN に参加して翻訳を手伝ってください！
この記事を English (US) で読むこともできます。
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
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Chrome
Full support
13
| Edge ? | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android
Full support
Yes
| Chrome Android
Full support
Yes
| Edge Mobile ? | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android ? |
name | Chrome Full support 13 | Edge ? | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile ? | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android ? |
root | Chrome Full support 13 | Edge ? | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile ? | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android ? |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- 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