FileSystemEntry.isFile

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The read-only isFile property of the FileSystemEntry interface is true if the entry represents a file (meaning it's a FileSystemFileEntry) and false if it's not.

You can also use isDirectory to determine if the entry is a directory.

You should not assume that any entry which isn't a file is a directory or vice-versa. There are other types of file descriptors on many operating systems. Be sure to use both isDirectory and isFile as needed to ensure that the entry is something you know how to work with.

Syntax

var isFile = FileSystemEntry.isFile;

Value

A Boolean indicating whether or not the FileSystemEntry is a file.

Example

This example shows how this property might be used to determine whether to process the entry as a directory or file. If the entry is neither, an error handler is called with an appropriate message.

if (entry.isDirectory) {
  processSubdirectory(entry);
} else if (entry.isFile) {
  processFile(entry);
} else {
  displayErrorMessage("Unsupported file system entry specified.");
}

Specifications

Specification Status Comment
File and Directory Entries API
The definition of 'isFile' in that specification.
Draft Initial specification.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
isFile
Experimental
Chrome Full support 13Edge No support NoFirefox Full support 50IE No support NoOpera No support NoSafari No support NoWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 50Opera Android No support NoSafari iOS No support NoSamsung Internet Android Full support Yes

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.

See also