xpathns.js

Wrapper for xpath.js to allow namespaces in queries.

Examples in this README modified from xpath.js README.

Install

Install with npm:

npm install xpathns.js

Install xpath.js and an XML engine (eg: xmldom):

npm install xpath.js xmldom

Your first xpath with namespaces:

	var nsMap = {
		ns1: "urn:somenamespace"
	};
  
	var select = require("xpathns.js")(nsMap),
	    dom = require("xmldom").DOMParser;

	var xml = "<book xmlns=\"urn:somenamespace\"><title>Harry Potter</title></book>";
	var doc = new dom().parseFromString(xml);
	var nodes = select(doc, "//ns1: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 xmlns=\"urn:somenamespace\"><title>Harry Potter</title></book>";
    var doc = new dom().parseFromString(xml);
    var title = select(doc, "//ns1:title/text()")[0].data;

    console.log(title);

-->

Harry Potter

Attributes

    var xml = "<book xmlns=\"urn:somenamespace\" author='J. K. Rowling'><title>Harry Potter</title></book>";
    var doc = new dom().parseFromString(xml);
    var author = select(doc, "/ns1:book/@author")[0].value;
        
    console.log(author);

-->

J. K. Rowling