XML DOM Tutorial
DOM HOMEDOM Introduction
DOM Nodes
DOM Node Tree
DOM Parser
DOM Load Function
DOM Methods
DOM Accessing
DOM Node Info
DOM Node List
DOM Traversing
DOM Browsers
DOM Navigating
Manipulate Nodes
DOM Get ValuesDOM Change Nodes
DOM Remove Nodes
DOM Replace Nodes
DOM Create Nodes
DOM Add Nodes
DOM Clone Nodes
DOM XMLHttpRequest
XML DOM Reference
DOM Node TypesDOM Node
DOM NodeList
DOM NamedNodeMap
DOM Document
DOM DocumentImpl
DOM DocumentType
DOM ProcessingInstr
DOM Element
DOM Attribute
DOM Text
DOM CDATA
DOM Comment
DOM XMLHttpRequest
DOM ParseError Obj
DOM Parser Errors
DOM Summary
XML DOM Examples
DOM ExamplesDOM Validator
XML DOM Parser
Most browsers have a built-in XML parser to read and manipulate XML.
The parser converts XML into a JavaScript accessible object (the XML DOM).
XML Parser
The XML DOM contains methods (functions) to traverse XML trees, access, insert, and delete nodes.
However, before an XML document can be accessed and manipulated, it must be loaded into an XML DOM object.
An XML parser reads XML, and converts it into an XML DOM object that can be accessed with JavaScript.
Most browsers have a built-in XML parser.
Load an XML Document
The following JavaScript fragment loads an XML document ("books.xml"):
Example
{
xhttp=new XMLHttpRequest();
}
else // IE 5/6
{
xhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xhttp.open("GET","books.xml",false);
xhttp.send();
xmlDoc=xhttp.responseXML;
Try it yourself »
Code explained:
- Create an XMLHTTP object
- Open the XMLHTTP object
- Send an XML HTTP request to the server
- Set the response as an XML DOM object
Load an XML String
The following code loads and parses an XML string:
Example
{
parser=new DOMParser();
xmlDoc=parser.parseFromString(text,"text/xml");
}
else // Internet Explorer
{
xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.loadXML(text);
}
Try it yourself »
Note: Internet Explorer uses the loadXML() method to parse an XML string, while other browsers use the DOMParser object.
Access Across Domains
For security reasons, modern browsers do not allow access across domains.
This means, that both the web page and the XML file it tries to load, must be located on the same server.
The examples on W3Schools all open XML files located on the W3Schools domain.
If you want to use the example above on one of your web pages, the XML files you load must be located on your own server.
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