npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

wicked-good-xpath

v1.3.0

Published

Pure JS implementation of the DOM Level 3 XPath specification

Downloads

589,564

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

dominator008dominator008

Keywords

closuregooglehtmljavascriptlibraryparsewgxpathwicked-good-xpathxpath

Readme

Wicked Good XPath

Build Status npm version

About

Wicked Good XPath is a Google-authored pure JavaScript implementation of the DOM Level 3 XPath specification. It enables XPath evaluation for HTML documents in every browser. We believe it to be the fastest XPath implementation available in JavaScript.

Instructions

Download the latest wgxpath.install.js file and include it on your webpage with a script tag. For example:

<script src="wgxpath.install.js"></script>

Then call wgxpath.install() from your JavaScript code, which will ensure document.evaluate, the XPath evaluation function, is defined on the window object. To install the library on a different window, pass that window as an argument to the install function.

We provide an NPM package at https://www.npmjs.com/package/wicked-good-xpath. There's also another NPM package at https://www.npmjs.com/package/wgxpath.

Building it Yourself

We use Gulp:

npm install
gulp

You can also run src/compile.sh if you want to use different versions of Closure Compiler / Closure Library.

History

Wicked Good XPath started as a Google Closure port of the JavaScript-XPath project by Cybozu Labs. At the time, JavaScript-XPath was the fastest JavaScript implementation of XPath available --- a whopping 10 times faster than Google's own AJAXSLT --- which made it a popular choice, notable for frontend web testing tools like Selenium and Web Puppeteer.

While it was fast, the code fell out of maintenance (last update was in 2007) so bugs were tough to get fixed. Also, since it wasn't written in Google Closure, it was tricky for us Googlers to integrate into our JavaScript applications. A rewrite was necessary.

However, we went beyond merely porting the library to Google Closure and fixing a couple bugs. We identified some significant additional performance improvements, such that our version runs about 30% faster than the original. On top of that, the Closure compiler was able to minify our code down to a mere 25K, 40% smaller than JavaScript-XPath's 42K (though it has grown a bit since). Finally, the code is structured and documented in a way that we believe will make future maintenance quicker and easier.