Returns a Blob whose data is backed by the given file.
The file must not be modified after the Blob is created. Any modifications
will cause reading the Blob data to fail with a DOMException error.
Synchronous stat operations on the file when the Blob is created, and before
each read in order to detect whether the file data has been modified on disk.
Returns a
Blob
whose data is backed by the given file.The file must not be modified after the
Blob
is created. Any modifications will cause reading theBlob
data to fail with aDOMException
error. Synchronous stat operations on the file when theBlob
is created, and before each read in order to detect whether the file data has been modified on disk.