xpath.js

An xpath module for node, written in pure javascript.

Originally written by Cameron McCormack (blog).

Prepared as a node module by Yaron Naveh (blog).

Install

Install with npm:

npm install xpath.js

xpath.js is xml engine agnostic but I recommend to use xmldom:

npm install xmldom

Your first xpath:

	var select = require('xpath.js')
	  , dom = require('xmldom').DOMParser

	var xml = "<book><title>Harry Potter</title></book>"
	var doc = new dom().parseFromString(xml)    
	var nodes = select(doc, "//title")
	console.log(nodes[0].localName + ": " + nodes[0].firstChild.data)
	console.log("node: " + nodes[0].toString())

-->

title: Harry Potter
Node: <title>Harry Potter</title>

Get text values directly

    var xml = "<book><title>Harry Potter</title></book>"
    var doc = new dom().parseFromString(xml)    
    var title = select(doc, "//title/text()")[0].data   
    console.log(title)

-->

Harry Potter

Namespaces

	var xml = "<book><title xmlns='myns'>Harry Potter</title></book>"
    var doc = new dom().parseFromString(xml)    
    var node = select(doc, "//*[local-name(.)='title' and namespace-uri(.)='myns/']")[0]
    console.log(node.namespaceURI)

-->

myns

Attributes

    var xml = "<book author='J. K. Rowling'><title>Harry Potter</title></book>"
    var doc = new dom().parseFromString(xml)    
    var author = select(doc, "/book/@author")[0].value    
    console.log(author)

-->

J. K. Rowling

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