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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.


Specifies an event listener to receive error events. These events occur when something goes wrong.


instanceOfLockedFile.onerror = funcRef;

Where funcRef is a function to be called when the error event occurs.


Specification Status Comment
FileSystem API Editor's Draft Draft proposal.

See also

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 Contributors to this page: fscholz, kscarfone, Jeremie
 Last updated by: fscholz,