Metadata: size property

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 read-only size property of the Metadata interface specifies the size, in bytes, of the referenced file or other file system object on disk.

Value

A number indicating the size of the file in bytes.

Examples

This example checks the size of a log file and removes it if it's larger than a megabyte.

js
workingDirectory.getFile(
  "log/important.log",
  {},
  (fileEntry) => {
    fileEntry.getMetadata((metadata) => {
      if (metadata.size > 1048576) {
        fileEntry.remove(() => {
          /* log file removed; do something clever here */
        });
      }
    });
  },
  handleError,
);

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
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