Objects

This section describes the objects associated with the File API.

In this section

Topic	Description
Blob	The Blob object represents a byte sequence similar to a file and provides methods and properties to create or manipulate ranges of binary data.
File	The File object (which inherits from the Blob object) provides read-only informational attributes about a file.
FileError	Note Internet Explorer 10. This object was supported in pre-release versions of Internet Explorer 10. As of Internet Explorer 10, it is obsolete and DOMError should be used instead. Applications using this object should be updated accordingly.
FileList	The list of files that have been selected by the user.
FileReader	The FileReader object provides methods to asynchronously read a File or Blob, and events to obtain the results of these reads.
FileReaderSync	FileReaderSync object provides methods to synchronously read a File or a Blob.
MSBlobBuilder	The MSBlobBuilder constructor returns an MSBlobBuilder object.
MSStream	Represents binary data in JavaScript.
MSStreamError	Note Internet Explorer 10. This object was supported in pre-release versions of Internet Explorer 10. As of Internet Explorer 10, it is obsolete and DOMError should be used instead. Applications using this object should be updated accordingly.
MSStreamReader	The MSStreamReader object provides methods to asynchronously read an MSStream object, and events to obtain the read results.
ObjectURLOptions	Provides the oneTimeOnly property for use with the createObjectURL method.
URL	Provides methods that create and revoke Uniform Resource Identifiers (URIs) for Blob, MSStream, and other objects.