This article is in need of a technical review.
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.
getMetadata method allows to retrieve some metadata about the locked file.
var request = instanceOfLockedFile.getMetadata(param);
An object used to request specific metadata. Each key is a boolean where
truemeans the metadata is expected and where
falsemeans it is not expected. Note that if the key is
undefined, it is considered as if it were
true. The following metadata are supported:
size: will provide the size of the file
lastModified: will provide the date when the file was last modified
FileRequest object. In case of success, the request's
result is an object with the metadata requested through the param object. They have the following format:
size: a number
|FileSystem API||Editor's Draft||Draft proposal|