Blob extension type

The Blob object represents a blob, which is a file-like object of immutable, raw data; they can be read as text or binary data, or converted into a ReadableStream so its methods can be used for processing the data.

Blobs can represent data that isn't necessarily in a JavaScript-native format. The File interface is based on Blob, inheriting blob functionality and expanding it to support files on the user's system.

on

• JSObject

Implemented types

• JSObject

Implementers

• File

Constructors

Blob([JSArray<BlobPart> blobParts, BlobPropertyBag options])

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

size → int

no setter

type → String

no setter

Methods

arrayBuffer() → JSPromise<JSArrayBuffer>

The arrayBuffer() method of the Blob interface returns a Promise that resolves with the contents of the blob as binary data contained in an ArrayBuffer.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

slice([int start, int end, String contentType]) → Blob

The slice() method of the Blob interface creates and returns a new Blob object which contains data from a subset of the blob on which it's called.

stream() → ReadableStream

The stream() method of the Blob interface returns a ReadableStream which upon reading returns the data contained within the Blob.

text() → JSPromise<JSString>

The text() method of the Blob interface returns a Promise that resolves with a string containing the contents of the blob, interpreted as UTF-8.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited