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XML DOM Tutorial
DOM Introduction
DOM Nodes
DOM Node Tree
DOM Parsing
DOM Load Function
DOM Methods
DOM Accessing
DOM Node Info
DOM Node List
DOM Traversing
DOM Browsers
DOM Navigating

Manipulate Nodes
DOM Get Values
DOM Change Nodes
DOM Remove Nodes
DOM Replace Nodes
DOM Create Nodes
DOM Add Nodes
DOM Clone Nodes
DOM HttpRequest

XML DOM Reference
DOM Node Types
DOM Node
DOM NodeList
DOM NamedNodeMap
DOM Document
DOM DocumentImpl
DOM DocumentType
DOM ProcessingInstr
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DOM Attribute
DOM Text
DOM Comment
DOM HttpRequest
DOM ParseError Obj
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The XMLHttpRequest Object

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Load a textfile into a div element with XML HTTP

Make a HEAD request with XML HTTP

Make a specified HEAD request with XML HTTP

List data from an XML file with XML HTTP

The XMLHttpRequest Object Reference


Method Description
abort() Cancels the current request
getAllResponseHeaders() Returns the complete set of http headers as a string
getResponseHeader("headername") Returns the value of the specified http header
open("method","URL",async,"uname","pswd") Specifies the method, URL, and other optional attributes of a request

The method parameter can have a value of "GET", "POST", or "PUT" (use "GET" when requesting data and use "POST" when sending data (especially if the length of the data is greater than 512 bytes.

The URL parameter may be either a relative or complete URL.

The async parameter specifies whether the request should be handled asynchronously or not. true means that script processing carries on after the send() method, without waiting for a response. false means that the script waits for a response before continuing script processing

send(content) Sends the request
setRequestHeader("label","value") Adds a label/value pair to the http header to be sent


Property Description
onreadystatechange An event handler for an event that fires at every state change
readyState Returns the state of the object:

0 = uninitialized
1 = loading
2 = loaded
3 = interactive
4 = complete

responseText Returns the response as a string
responseXML Returns the response as XML. This property returns an XML document object, which can be examined and parsed using W3C DOM node tree methods and properties
status Returns the status as a number (e.g. 404 for "Not Found" or 200 for "OK")
statusText Returns the status as a string (e.g. "Not Found" or "OK")

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