File class
The interface provides information about files and allows
JavaScript in a web page to access their content.
objects are generally retrieved from a FileList object
returned as a result of a user selecting files using the
<input> element, from a drag and drop operation's
DataTransfer object, or from the mozGetAsFile() API on an
HTMLCanvasElement.
A object is a specific kind of a Blob, and can be used in any
context that a Blob can. In particular, FileReader,
URL.createObjectURL(), createImageBitmap(), and
XMLHttpRequest.send() accept both Blobs and s.
See Using files from web applications for more information and
examples.
Blob
File
Constructors
- File(Iterable fileBits, String fileName, [FilePropertyBag? options])
-
factory
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- lastModified → int
-
Available on File, provided by the PropsFile extension
no setter - name → String
-
Available on File, provided by the PropsFile extension
no setter - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- size → int
-
Available on Blob, provided by the PropsBlob extension
no setter - type → String
-
Available on Blob, provided by the PropsBlob extension
no setter - webkitRelativePath → String
-
Available on File, provided by the PropsFile extension
no setter
Methods
-
arrayBuffer(
) → Future< ByteBuffer> -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
slice(
[int? start, int? end, String? contentType]) → Blob -
stream(
) → ReadableStream -
text(
) → Future< String> -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited