IDBMutableFile.open()

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Note: The three non-standard interfaces IDBMutableFile, IDBFileHandle, and IDBFileRequest are disabled by default. Consider using the File and Directory Entries API instead.

The open() method of the IDBMutableFile returns an IDBFileHandle object that allows to safely write in the file.

Syntax

open(mode)

Parameters

mode

A string that specifies the writing mode for the file. It can be readonly or readwrite.

Return value

A IDBMutableFile object.

Specifications

This feature is not part of any current specification. It is no longer on track to become a standard.

Browser compatibility

This method is not supported by any current browser. From Firefox 102 it is behind the preference dom.fileHandle.enabled.

See also