XML and Dom node nodetype

Both XML and Dom have nodes, and each node has the nodetype attribute.

Nodetype	named constant
1	element_node
2	attribute_node
3	text_node
4	cdata_section_node
5	entity_reference_node
6	entity_node
7	processing_instruction_node
8	comment_node
9	document_node
10	document_type_node
11	document_fragment_node
12	Notation_node

When processing XML, it processes unknown nodes. For example, when traversing, it usually needs to judge nodetype for processing.

The same is true for DOM nodes. In cross-browser development, the safest way is to process Nodes Based on nodetype. For example, ie ignores spaces between two nodes, while Firefox regards them as a node. If nodetype is used for judgment and processing, no two copies will be written.Code.

 

 

 

PS: Reference http://www.w3schools.com/Dom/dom_nodetype.asp