osmosis
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Web scraper for NodeJS
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# Osmosis
HTML/XML parser and web scraper for NodeJS.
[](https://www.npmjs.com/package/osmosis)
[](https://travis-ci.org/rchipka/node-osmosis)
## Features
- Uses native libxml C bindings
- Clean promise-like interface
- Supports CSS 3.0 and XPath 1.0 selector hybrids
- [Sizzle selectors](https://github.com/jquery/sizzle/wiki#other-selectors-and-conventions),
[Slick selectors](http://mootools.net/core/docs/1.6.0/Slick/Slick), and
[more](https://github.com/rchipka/node-osmosis/blob/master/docs/Selectors.md)
- No large dependencies like jQuery, cheerio, or jsdom
- Compose deep and complex data structures
- HTML parser features
- Fast parsing
- Very fast searching
- Small memory footprint
- HTML DOM features
- Load and search ajax content
- DOM interaction and events
- Execute embedded and remote scripts
- Execute code in the DOM
- HTTP request features
- Logs urls, redirects, and errors
- Cookie jar and custom cookies/headers/user agent
- Login/form submission, session cookies, and basic auth
- Single proxy or multiple proxies and handles proxy failure
- Retries and redirect limits
## Example
```javascript
var osmosis = require('osmosis');
osmosis
.get('www.craigslist.org/about/sites')
.find('h1 + div a')
.set('location')
.follow('@href')
.find('header + div + div li > a')
.set('category')
.follow('@href')
.paginate('.totallink + a.button.next:first')
.find('p > a')
.follow('@href')
.set({
'title': 'section > h2',
'description': '#postingbody',
'subcategory': 'div.breadbox > span[4]',
'date': 'time@datetime',
'latitude': '#map@data-latitude',
'longitude': '#map@data-longitude',
'images': ['img@src']
})
.data(function(listing) {
// do something with listing data
})
.log(console.log)
.error(console.log)
.debug(console.log)
```
## Documentation
For documentation and examples check out [https://rchipka.github.io/node-osmosis/global.html](https://rchipka.github.io/node-osmosis/global.html)
## Dependencies
- [libxmljs-dom](https://github.com/rchipka/node-libxmljs-dom) - DOM wrapper for [libxmljs](https://github.com/libxmljs/libxmljs) C bindings
- [needle](https://github.com/tomas/needle) - Lightweight HTTP wrapper
## Donate
Please consider a donation if you depend on web scraping and Osmosis makes your job a bit easier.
Your contribution allows me to spend more time making this the best web scraper for Node.
[](https://www.paypal.com/cgi-bin/webscr?item_name=node-osmosis&cmd=_donations&business=NAXMWBMWKUWUU)