NodeName, NodeValue, and NodeType property values in DOM nodes

today when using Childrennodes to operate the DOM, encountered a problem, carefully check the relevant API, record: NodeName

The NodeName property contains the name of a node. The nodeName of the element node is the label name attribute node NodeName is the property name of the text node NodeName is always #text the nodeName of the document node is always #document


NodeValue

For text nodes, the NodeValue property contains text.

For attribute nodes, the NodeValue property contains the property value.

The NodeValue property is not available for document nodes and ELEMENT nodes.

NodeType

The NodeType property returns the type of the node.

The most important node types are:

element Type	node Type
Elements	1
Property	2
Text	3
Comments	8
Document	9