Metadata: size property

Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.

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.

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