Web/API/FileSystemEntry/getMetadata

ObsoleteThis feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

The FileSystemEntry interface's method getMetadata() obtains a Metadata object with information about the file system entry, such as its modification date and time and its size.

Syntax

FileSystemEntry.getMetadata(successCallback[, errorCallback]);

Parameters

successCallback: A function which is called when the copy operation is succesfully completed. Receives a single input parameter: a Metadata object with information about the file.
errorCallback Optional: An optional callback which is executed if an error occurs while looking up the metadata. There's a single parameter: a FileError describing what went wrong.

Return value

undefined.

Errors

FileError.NOT_FOUND_ERR: The FileSystemEntry refers to an item which doesn't exist.
FileError.SECURITY_ERR: Security restrictions prohibit obtaining the requested metadata.

Example

This example checks the size of a log file in a temporary folder and, if it exceeds a megabyte, moves it into a different directory.

workingDirectory.getFile("tmp/log.txt", {}, function(fileEntry) {
  fileEntry.getMetadata(function(metadata) {
    if (metadata.size > 1048576) {
      workingDirectory.getDirectory("log", {}, function(dirEntry) {
        fileEntry.moveTo(dirEntry);
      }, handleError);
    }
  });
}, handleError);

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`getMetadata` Experimental'Deprecated'Non-standard'	Chrome Full support 8	Edge Full support 79	Firefox No support No	IE No support No	Opera No support No	Safari No support No	WebView Android Full support ≤37	Chrome Android Full support 18	Firefox Android No support No	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support 1.0

Legend

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.': Experimental. Expect behavior to change in the future.
Non-standard. Expect poor cross-browser support.': Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.': Deprecated. Not for use in new websites.