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.
IDBFileHandle interface provides tools to deal with a given file with all the necessary locks.
IDBMutableFileobject from which the lock was opened.
The mode for accessing the file; can be
A flag indicating if the file can be accessed (
true) or not (
The position of the reading/writing pointer within the file.
Allows to retrieve the file metadata (size and date of the last modification).
Allows to retrieve a part of the content of the file as an
Allows to retrieve a part of the content of the file as a string.
Allows to write some data in the file starting at the
Allows to write some data at the end of the file..
Allows to truncate the file's content.
Allows to guarantee that any buffered data has been transferred to disk.
IDBFileHandleinactive and cancels all ongoing operations.
This feature is not part of any current specification. It is no longer on track to become a standard.
This interface is not supported by any current browser.
From Firefox 102 it is behind the preference