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

Syntax

new 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

Specification Status Comment
File API Working Draft Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
File() constructorChrome Full support 13Edge No support NoFirefox Full support 7IE No support NoOpera Full support 11.5Safari Full support 10.1WebView Android Full support YesChrome Android Full support YesFirefox Android Full support 7Opera Android No support NoSafari iOS Full support 6Samsung Internet Android Full support Yes

Legend

Full support  
Full support
No support  
No support

See also

Dokumentum címkék és a közreműködők

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