The File() constructor creates a new File object instance.
The File() constructor creates a new File object instance.
js
new File(bits, name) new File(bits, name, options)
bits An iterable object such as an Array, having ArrayBuffers, TypedArrays, DataViews, Blobs, strings, or a mix of any of such elements, that will be put inside the File. Note that strings here are encoded as UTF-8, unlike the usual JavaScript UTF-16 strings.
nameA string 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 string 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().
js
const file = new File(["foo"], "foo.txt", { type: "text/plain", });
| Specification |
|---|
| File API # file-constructor |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
File |
38 | 79 | 28 | No | 25 | 10.1 | 38 | 38 | 28 | 25 | 10.3 | 3.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/File/File