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.
mode property provides the read/write status of the
var mode = instanceOfLockedFile.mode
A string, one of
|FileSystem API||Editor's Draft||Draft Proposal.|