Metadata.size
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 read-only size
property of the Metadata
interface specifies the size, in bytes, of the referenced file or other file system object on disk.
Syntax
var size = Metadata.size;
Value
A number indicating the size of the file in bytes.
Example
This example checks the size of a log file and removes it if it's larger than a megabyte.
workingDirectory.getFile("log/important.log", {}, function(fileEntry) {
fileEntry.getMetadata(function(metadata) {
if (metadata.size > 1048576) {
fileEntry.remove(function() {
/* log file removed; do something clever here */
});
}
});
}, handleError);
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 | |
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
Metadata
FileSystemEntry.getMetadata()
FileSystemFileEntry
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https://developer.mozilla.org/en-US/docs/Web/API/Metadata/size