Metadata
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
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.
The Metadata interface is used by the File and Directory Entries API to contain 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().
Properties
-
modificationTimeRead only -
A
Dateobject indicating the date and time the entry was modified. -
sizeRead only -
A 64-bit unsigned integer indicating the size of the entry in bytes.
Specifications
This API has no official W3C or WHATWG specification.
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
Metadata |
13 |
≤79 |
No |
No |
No |
No |
No |
Yes |
No |
No |
No |
Yes |
modificationTime |
13 |
≤79 |
No |
No |
No |
No |
No |
Yes |
No |
No |
No |
Yes |
size |
13 |
≤79 |
No |
No |
No |
No |
No |
Yes |
No |
No |
No |
Yes |
See also
- File and Directory Entries API
- Introduction to the File System API
FileSystemEntry-
FileSystemFileEntryandFileSystemDirectoryEntry
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https://developer.mozilla.org/en-US/docs/Web/API/Metadata