JavaScript retrieves and parses XML

XML is widely used in Web development and is usually used as a carrier for data transmission. Generally, when passing data to the front-end, it must be parsed using JavaScript before it can be used. Therefore, parsing XML with JavaScript is very common.

The following XML file is available:

<?xml version="1.0" encoding="ISO-8859-1" ?> <note><to>duncan</to> <from>John</from>  
You can use the following method for parsing:
 
 
XmlDoc. getElementsByTagName ("to") [0]. childNodes [0]. nodeValue how do I understand this code?
 

  
 
 
   
XmlDoc-the XML document created by the parser.
 
 
   
GetElementsByTagName ("to") [0]-the first <to> element.
 
 
   
The first child element (text node) of the childNodes [0]-<to> element ).
 
 
   
NodeValue-value of the node (text itself ).
 

  
 
If the xml file is:
 
<?xml version="1.0" encoding="ISO-8859-1" ?> <note><to>asdfsd<too>duncan1</too>    </to>     <too>duncan2</too>  <from>John</from>    
Read the first <too>: xmlDoc. getElementsByTagName ("to") [0]. getElementsByTagName ("t00") [0]. childNodes [0]. nodeValue.
 
Read the second <too>: xmlDoc. getElementsByTagName ("too") [0]. childNodes [0]. nodeValue.