XPath tutorial

http://www.w3schools.com/xpath/xpath_nodes.asp

terminology:

Nodes/Atomic values/parent/children/siblings/Ancestors/Descendants

http://www.w3schools.com/xpath/xpath_syntax.asp

examples:

http://www.w3schools.com/xpath/xpath_examples.asp

Using XMLHttpRequest to load XML documents is supported in all modern browsers.

var xmlhttp=new XMLHttpRequest()

IE: xmlDoc.selectNodes(xpath);

other browsers:xmlDoc.evaluate(xpath, xmlDoc, null, XPathResult.ANY_TYPE,null);

xpath = /bookstore/book/title Select all the titles

/bookstore/book[1]/title select the first book title

/bookstore/book[price>35]/title