File()

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

Syntax

new File(bits, name[, options]);

Parameters

bits

An Array of ArrayBuffer, ArrayBufferView, Blob, USVString objects, or a mix of any of such objects, that will be put inside the File. USVString objects are 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

Specification
File API
# file-constructor

Browser compatibility

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See also