Tech Stuff - DOM nodeValue attribute
W3C Core Reference. Part of the Node Interface
nodeType attribute
Returns the value, if any, for the node (see list below). Typically used to read and/or update node text.
Syntax
string = object.nodeValue;
Related Commands
nodeName attribute, nodeType attribute.
Values
nodeValue returns a value determined by the nodeType as follows:
| nodeType |
Value |
| ELEMENT_NODE = 1 |
Null |
| ATTRIBUTE_NODE = 2 |
Value of Attribute |
| TEXT_NODE = 3 |
Text of node |
| CDATA_SECTION_NODE = 4 |
Contents of CDATA section |
| ENTITY_REFERENCE_NODE = 5 |
Null |
| ENTITY_REFERENCE_NODE = 5 |
Null |
| ENTITY_NODE = 6 |
Null |
| PROCESSING_INSTRUCTION_NODE = 7 |
Entire content excluding target |
| COMMENT_NODE = 8 |
Contents of comment |
| DOCUMENT_NODE = 9 |
Null |
| DOCUMENT_TYPE_NODE = 10 |
Null |
| DOCUMENT_FRAGMENT_NODE = 11 |
Null |
| NOTATION_NODE = 12 |
Null |
Examples
<!-- HTML FRAGMENT -->
<p id="one">Test Text</p>
// read text value
// assumes a single child node for the paragraph - risky
txt = document.getElementById("one").firstChild.nodeValue;
// txt = Test Text
// update contents of text node
document.getElementById("one").firstChild.nodeValue = "Kilroy was here";
// safer code to find text node
cnodes = document.getElementById("one").childNodes;
for(i = 0; i < cnodes.length; i++)
{
if(cnodes[i].nodeType == 3)
{
// do something if this is an text node
}
}
Notes:
- Text nodes are childNodes of the paragraph node.
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