MSStream object

Represents binary data in JavaScript.

Syntax

var stream = stream.msInputStream;

DOM Information

Inheritance Hierarchy

Members

The MSStream object has these types of members:

• Methods
• Properties

Methods

The MSStream object has these methods.

Properties

The MSStream object has these properties.

Remarks

The MSStream object is a Document Object Model (DOM) type that represents a stream of unsized, sequential binary data. You use the MSStream object for data that you are converting to a Blob object for use in a JavaScript application. MSStream is backed by IInputStream.

The MSStream object also allows interopt with XHR and HTML tags.

An MSStream is consumed or created in the following areas:

• XmlHttpRequest (XHR)
• Canvas
• IndexedDB
• PostMessage

You create the Uniform Resource Identifier (URI) for the MSStream object using the window.URL.createObjectURL method. MSStream is intended for a one-time use only; the URI is revoked when it is resolved by the HTML element that is consuming the stream.

Examples

The following shows how to get an MSStream from XmlHttpRequest in ready state 3.

var xhrRequest;

function readyStateCallback() {
  if (xhrRequest.readyState == 3 && xhrRequest.status == 200 ) {
    var msstream = reqXML.response;
    var stream = stream.msInputStream;
	   
    doSomething(stream);
  }
}

function downloadBlob() {          
  xhrRequest = new XMLHttpRequest();

  if (xhrRequest) {
    xhrRequest.open("GET", "http://myserver/myfile", true);
    xhrRequest.responseType = "ms-stream";
    xhrRequest.onreadystatechange = readyStateCallback;
    xhrRequest.send(null);
  }
}

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Build date: 11/20/2012