File.constructor

The File() constructor creates a new File object instance.

Syntax

File(bits, name [, options]);

Parameters

bits

An Array of ArrayBuffer, ArrayBufferView, Blob, or DOMString objects — or a mix of any such objects. This is the file content encoded as UTF-8.

name

A USVString representing the file name or the path to the file.

options Optional

An options object containing optional attributes for the file. Available options are as follows:

• type: A DOMString representing the MIME type of the content that will be put into the file. Defaults to a value of "".
• lastModified: A number representing the number of milliseconds between the Unix time epoch and when the file was last modified. Defaults to a value of Date.now().

Example

var file = new File(["foo"], "foo.txt", {
  type: "text/plain",
});

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also

• FileReader
• Blob