FileEntrySync

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.

The FileEntrySync interface of the File System API represents a file in a file system. It lets you write content to a file.

Inherits from: EntrySync

About this document

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

This specification is more or less abandoned as it didn't get significant traction among browser makers.

Basic concepts

To write content to file, create a FileWriter object by calling createWriter().

Method overview

FileWriterSync createWriter () raises (FileException);
File file () raises (FileException);

Methods

createWriter()

Creates a new FileWriter associated with the file that the FileEntry represents.

void createWriter (
) raises (FileException);
Parameter

None.

Returns
FileWriterSync
Exceptions

This method can raise a FileException with the following codes:

Exception Description
NOT_FOUND_ERR The file does not exist.
INVALID_STATE_ERR The file is no longer valid for some reason other than it having been deleted.

file()

Returns a File that represents the current state of the file that this FileEntry represents.

void file (
) raises (FileException);
Parameter

None.

Returns
File
Exceptions

This method can raise a FileException with the following codes:

Exception Description
NOT_FOUND_ERR The file does not exist.
INVALID_STATE_ERR The file is no longer valid for some reason other than it having been deleted.

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 0.16 webkit 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

Document Tags and Contributors

Contributors to this page: Sheppy, Cobra, grendel, teoli
Last updated by: Cobra,