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@ray-core/htmlparser2
Advanced tools
Readme
A forgiving HTML/XML/RSS parser. The parser can handle streams and provides a callback interface.
npm install htmlparser2
A live demo of htmlparser2 is available here.
const htmlparser2 = require("htmlparser2");
const parser = new htmlparser2.Parser(
{
onopentag(name, attribs) {
if (name === "script" && attribs.type === "text/javascript") {
console.log("JS! Hooray!");
}
},
ontext(text) {
console.log("-->", text);
},
onclosetag(tagname) {
if (tagname === "script") {
console.log("That's it?!");
}
}
},
{ decodeEntities: true }
);
parser.write(
"Xyz <script type='text/javascript'>var foo = '<<bar>>';</ script>"
);
parser.end();
Output (simplified):
--> Xyz
JS! Hooray!
--> var foo = '<<bar>>';
That's it?!
Read more about the parser and its options in the wiki.
The DomHandler
(known as DefaultHandler
in the original htmlparser
module) produces a DOM (document object model) that can be manipulated using the DomUtils
helper.
The DomHandler
, while still bundled with this module, was moved to its own module. Have a look at it for further information.
const feed = htmlparser2.parseFeed(content, options);
Note: While the provided feed handler works for most feeds, you might want to use danmactough/node-feedparser, which is much better tested and actively maintained.
After having some artificial benchmarks for some time, @AndreasMadsen published his htmlparser-benchmark
, which benchmarks HTML parses based on real-world websites.
At the time of writing, the latest versions of all supported parsers show the following performance characteristics on Travis CI (please note that Travis doesn't guarantee equal conditions for all tests):
gumbo-parser : 34.9208 ms/file ± 21.4238
html-parser : 24.8224 ms/file ± 15.8703
html5 : 419.597 ms/file ± 264.265
htmlparser : 60.0722 ms/file ± 384.844
htmlparser2-dom: 12.0749 ms/file ± 6.49474
htmlparser2 : 7.49130 ms/file ± 5.74368
hubbub : 30.4980 ms/file ± 16.4682
libxmljs : 14.1338 ms/file ± 18.6541
parse5 : 22.0439 ms/file ± 15.3743
sax : 49.6513 ms/file ± 26.6032
This module started as a fork of the htmlparser
module.
The main difference is that htmlparser2
is intended to be used only with node (it runs on other platforms using browserify).
htmlparser2
was rewritten multiple times and, while it maintains an API that's compatible with htmlparser
in most cases, the projects don't share any code anymore.
The parser now provides a callback interface inspired by sax.js (originally targeted at readabilitySAX). As a result, old handlers won't work anymore.
The DefaultHandler
and the RssHandler
were renamed to clarify their purpose (to DomHandler
and FeedHandler
). The old names are still available when requiring htmlparser2
, your code should work as expected.
To report a security vulnerability, please use the Tidelift security contact. Tidelift will coordinate the fix and disclosure.
htmlparser2
for enterpriseAvailable as part of the Tidelift Subscription
The maintainers of htmlparser2
and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.
FAQs
Fast & forgiving HTML/XML/RSS parser
The npm package @ray-core/htmlparser2 receives a total of 549 weekly downloads. As such, @ray-core/htmlparser2 popularity was classified as not popular.
We found that @ray-core/htmlparser2 demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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