Package Exports

wgxpath

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (wgxpath) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

node-wgxpath

Wicked Good XPath is a fast implementation of document.createExpression and document.evaluate (DOM3-XPath) in pure Javascript.

Version

x.y.z: x.y refers to the Wicked Good XPath revision when wgxpath.install.js was built; z refers to any improvements to this package.

I'm pretty lazy, so I don't build Wicked Good XPath myself. When the pre-compiled wgxpath.install.js is updated, I'll update this package.

Installation

Install with npm:

npm install wgxpath

Make sure things are working:

node node_modules/wgxpath/word_of_the_day.js

Example

This example scrapes the Merriam-Webster Word of the Day. This code can also be found in word_of_the_day.js. Be sure to install jsdom 3.x before running the example.

$ npm install jsdom@"<4"

var wgxpath = require('wgxpath');
var jsdom = require('jsdom');

var url = 'http://www.merriam-webster.com/word-of-the-day/';
var expressionString = '//*[@id="content"]/div[3]/ul/li[1]/strong';

jsdom.env({
  html: url,
  done: function(errors, window) {
    wgxpath.install(window);
    var expression = window.document.createExpression(expressionString);
    var result = expression.evaluate(window.document,
        wgxpath.XPathResultType.STRING_TYPE);
    console.log('The Word of the Day is "' + result.stringValue + '."');
  }
});