Non-standard
 
      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.
Summary
The mode property provides the read/write status of the LockedFile file.
Syntax
var mode = instanceOfLockedFile.mode
Value
A string, one of readonly or readwrite.
Specifications
| Specification | Status | Comment | 
|---|---|---|
| FileSystem API | Editor's Draft | Draft Proposal. |