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setNamedItemNS (method )

Owning interface and usage:  
NamedNodeMap.setNamedItemNS(arg)

Member of these other interfaces:  
none

Description:  
Adds a node using its namespaceURI and localName.

Parameters:  
Node arg  -  A node to store in this map.

Returns:  
Node -  If the new Node replaces an existing node the replaced Node is returned, otherwise null is returned.

Exceptions:  
DOMException WRONG_DOCUMENT_ERR
Raised if arg was created from a different document than the one that created this map.
DOMException NO_MODIFICATION_ALLOWED_ERR
Raised if this map is readonly.
DOMException INUSE_ATTRIBUTE_ERR
Raised if arg is an Attr that is already an attribute of another Element object. The DOM user must explicitly clone Attr nodes to re-use them in other elements.
DOMException HIERARCHY_REQUEST_ERR
Raised if an attempt is made to add a node doesn't belong in this NamedNodeMap.

Note:  
If a node with that namespace URI and that local name is already present in this map, it is replaced by the new one. HTML-only DOM implementations do not need to implement this method.


Example:
Text in the first DIV.
x a b x
Text in the last DIV.
Source: 
   <div id="doc" xmlns:svg="http://www.w3.org/2000/svg">
     <div>
       Text in the first DIV.
     </div>
     <svg:svg id="logo" xmlns:xlink="http://www.w3.org/1999/xlink" width="200" height="60">
       <svg:g style="fill:#3399cc; font-size:36pt; font-family:'dialog'; font-weight: bold">
         <svg:a xlink:type="simple" xlink:href="http://www.zvon.org">
           <svg:text x="50%" y="65%" text-anchor="middle">ZVON.org</svg:text>
         </svg:a>
       </svg:g>
     </svg:svg>
     <apply xmlns="http://www.w3.org/1998/Math/MathML">
   <int/> 
   <bvar> 
     <ci> x </ci> 
   </bvar> 
   <interval> 
     <ci> a </ci> 
     <ci> b </ci> 
   </interval> 
   <apply>
     <cos/> 
     <ci> x </ci> 
   </apply> 
     </apply> 
     <div>
       Text in the last DIV.
     </div>
   </div>
JavaScript: 
  var attrNode = document.getElementById('doc').attributes;
  var attr = document.createAttributeNS('http://zvon.org/namespaces/test', 'zvon:temp');
  attr.value = 'temporary';
  attrNode.setNamedItemNS(attr);
  var output = attrNode.getNamedItemNS('http://zvon.org/namespaces/test', 'zvon:temp').nodeValue;
Output:
desired your browser
temporary