class Blob extends Object
A Blob object represents 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.
To construct a Blob from other non-blob objects and data, use the Blob() constructor. To create a blob that contains a subset of another blob's data, use the slice() method. To obtain a Blob object for a file on the user's file system, see the File documentation.
The APIs accepting Blob objects are also listed in the File documentation.
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Instance Constructors
- new Blob(blobParts: Iterable[BlobPart], options: BlobPropertyBag = js.native)
Value Members
- final def !=(arg0: Any): Boolean
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- final def ##: Int
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- final def ==(arg0: Any): Boolean
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- def arrayBuffer(): Promise[ArrayBuffer]
Returns a promise that resolves with an ArrayBuffer containing the entire contents of the blob as binary data.
- final def asInstanceOf[T0]: T0
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- def clone(): AnyRef
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- protected[lang]
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- @throws(classOf[java.lang.CloneNotSupportedException]) @native()
- final def eq(arg0: AnyRef): Boolean
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- def equals(arg0: AnyRef): Boolean
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- def finalize(): Unit
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- final def getClass(): Class[_ <: AnyRef]
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- def hasOwnProperty(v: String): Boolean
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- def hashCode(): Int
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- final def isInstanceOf[T0]: Boolean
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- def isPrototypeOf(v: Object): Boolean
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- final def ne(arg0: AnyRef): Boolean
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- final def notify(): Unit
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- final def notifyAll(): Unit
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- @native()
- def propertyIsEnumerable(v: String): Boolean
- Definition Classes
- Object
- def size: Double
The size, in bytes, of the data contained in the Blob object.
- def slice(start: Double = js.native, end: Double = js.native, contentType: String = js.native): Blob
A string indicating the MIME type of the data contained in the Blob.
A string indicating the MIME type of the data contained in the Blob. If the type is unknown, this string is empty.
- def stream(): ReadableStream[Uint8Array]
Returns a ReadableStream that can be used to read the contents of the blob.
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def text(): Promise[String]
Returns a promise that resolves with a USVString containing the entire contents of the blob interpreted as UTF-8 text.
Returns a promise that resolves with a USVString containing the entire contents of the blob interpreted as UTF-8 text.
- See also
https://developer.mozilla.org/en-US/docs/Web/API/USVString
- def toLocaleString(): String
- Definition Classes
- Object
- def toString(): String
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- def type: String
A string indicating the MIME type of the data contained in the Blob.
A string indicating the MIME type of the data contained in the Blob. If the type is unknown, this string is empty.
- def valueOf(): Any
- Definition Classes
- Object
- final def wait(): Unit
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- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long, arg1: Int): Unit
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- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
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- @throws(classOf[java.lang.InterruptedException]) @native()
Deprecated Value Members
- def close(): Unit
- Annotations
- @deprecated
- Deprecated
(Since version 1.2.0) This method seems to have been added in error and not actually exist.