Metadata

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.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The Metadata interface contains information about a file system entry. This metadata includes the file's size and modification date and time.

Note: This interface isn't available through the global scope; instead, you obtain a Metadata object describing a FileSystemEntry using the method FileSystemEntry.getMetadata().

Instance properties

modificationTime Read only Experimental Non-standard

A Date object indicating the date and time the entry was modified.

size Read only Experimental Non-standard

A 64-bit unsigned integer indicating the size of the entry in bytes.

Specifications

This feature has been removed from all specification and is not in the process of being standardized.

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Metadata
ExperimentalNon-standard
modificationTime
ExperimentalNon-standard
size
ExperimentalNon-standard

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.
Non-standard. Check cross-browser support before using.

See also