Talking about the difference _javascript skill of nodename,nodevalue,nodetype,typeof

The NodeName property contains the name of a node.

The nodename of the element node is the label name

The nodename of the attribute node is the property name

The nodename of the text node is always #text

The nodename of the document node is always #document

NodeValue node Value

For text nodes, the NodeValue property contains text.

For an attribute node, the NodeValue property contains the property value.

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

The NodeType property can return the type of the node.

The most important node types are:

Element element1 attributes attr2 text text3 comments COMMENTS8 Documentation Document9 ADD:

Value-Element type

1-element

2-attribute

3-text

4-cdata

5-entity REFERENCE

6-entity

7-PI (processing instruction)

8-comment

9-document

10-document TYPE

11-document FRAGMENT

12-notation

typeof

Returns a String that represents the data type of an expression, with the possible strings: "Number", "string", "Boolean", "Object", "function", and "undefined"

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