148 Part III .Document Objects Reference Example (My space web page) on

148 Part III .Document Objects Reference Example on the CD-ROM Related Items: nodeName property; getElementsByTagName() method. tagUrn Value: String Read-Only NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility The tagUrn property is associated primarily with XML that is embedded within a document. When you include XML, you can specify one or more XML Namespaces that define the owner of a custom tag name thus preventing conflicts of identical custom tags from different sources in a document. (See Chapter 33 for more about XML objects.) A Namespace definition can include a Uniform Resource Name (URN) that lets a page link to a destination on the network that further defines such Namespace aspects as a behavior associated with a custom XML element. The XML Namespace is assigned (in IE5+) as an attribute of the tag that surrounds the entire document. After that, the namespace value precedes all custom tags linked to that Namespace: To find out the URN of the namespace owner of an element, you can read the tagUrn property of that element. For the preceding example, the tagURN property returns www.giantco.com/xmllib. For regular HTML elements, the returned value is always null. The corresponding property in the W3C DOM and NN6 is namespaceURI. Example on the CD-ROM Related Item: scopeName property. title Value: String Read/Write On the CD-ROM On the CD-ROM elementObject.title
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