What's XMLHTTP?

Xml

What is XMLHTTP?

The most common definition is: XMLHTTP is a set of APIs that can be routed through HTTP protocols or receive XML and other data from a scripting language such as JavaScript, VbScript, and JScript. The biggest use of XMLHTTP is that you can update portions of a Web page without refreshing the entire page.
Explanation from MSDN: XMLHTTP provides a protocol for clients to communicate with HTTP servers. The client can pass the XMLHTTP object (MSXML2). xmlhttp.3.0) Send a request to the HTTP server and use the Microsoft XML Document Object model Microsoft? The XML Document Object Model (DOM) handles the response.

Now the absolute majority of browsers have increased support for XMLHTTP, ie in the use of ActiveXObject way to create XMLHTTP objects, other browsers such as: Firefox, Opera and so on through Window.xmlhttprequest to create XMLHTTP objects.

XMLHTTP Object reference:

Property:

onreadystatechange*	Specifies the event handling handle when the ReadyState property changes. Write only
readyState	Returns the status of the current request, read-only.
Responsebody	Returns the body of the response message as a unsigned byte array. Read Only
Responsestream	Returns the response information in the form of an ADO Stream object. Read-only
ResponseText	Returns the response information as a string. Read Only
Responsexml	Formats the response information as an XML Document object and returns a read-only
Status	Returns the HTTP status code for the current request. Read Only
StatusText	Returns the response line state of the current request, read-only

* Indicates that this property is an extension of the Document Object model for the consortium.

Method:

Create a new HTTP request and specify the method, URL, and authentication information (username/password) for this request that specifies the request individually

abort	Cancel the current request
getallresponseheaders
getresponseheader	Get the specified HTTP header
open
send
setrequestheader	an HTTP header

Event:

No