var select = require('html-select');
var tokenize = require('html-tokenize');
var fs = require('fs');

fs.createReadStream(__dirname + '/page.html')
    .pipe(tokenize())
    .pipe(select('.content span', function (e) {
        console.log('matched:', e);
    }))
;

with this html input:

<html>
  <body>
    <h1>whoa</h1>
    <div class="content">
      <span class="greeting">beep boop</span>
      <span class="name">robot</div>
    </div>
  </body>
</html>

produces this output:

matched: { name: 'span', attributes: { class: 'greeting' } }
matched: { name: 'span', attributes: { class: 'name' } }

methods

var select = require('html-select')

var w = select(selector, cb)

Return a writable stream w that expects an object stream of html-tokenize records as input.

cb(tag) fires on the same tick for each tag matching the css selector selector. tag looks like:

{ name: 'input', attributes: { type: 'text', 'name': 'user', value: 'beep' } }

The records are of the form:

$ echo -e '<html><body><h1>beep boop</h1></body></html>' | html-tokenize 
["open","<html>"]
["open","<body>"]
["open","<h1>"]
["text","beep boop"]
["close","</h1>"]
["close","</body>"]
["close","</html>"]
["text","\n"]

except the second item in each record will be a Buffer if you get the results from html-tokenize directly.

tag.createReadStream(opts)

Additionally to tag.name and tag.attributes, you can create a readable stream with all the contents nested under tag.

When opts.outer is true, the outerHTML content of the currently selected tag is included. For example, taking the selector and opts from process.argv:

var select = require('html-select');
var tokenize = require('html-tokenize');
var fs = require('fs');
var minimist = require('minimist');

var argv = minimist(process.argv.slice(2), { boolean: [ 'outer' ] });
var selector = argv._.join(' ');

process.stdin.pipe(tokenize())
    .pipe(select(selector, function (e) {
        e.createReadStream(argv).pipe(process.stdout);
    }))
;

Running this program normally gives:

$ node read.js .content < page.html

      <span class="greeting">beep boop</span>
      <span class="name">robot</div>

but running the program with opts.outer as true produces:

$ node read.js .content --outer < page.html
<div class="content">
      <span class="greeting">beep boop</span>
      <span class="name">robot</div>
    </div>

usage

usage: html-select SELECTOR

  Given a newline-separated json stream of html tokenize output on stdin,
  print matching tags as newline-separated json on stdout.

todo

E > F
E + F

install

With npm do:

npm install html-select

to get the library or

npm install -g html-select

to get the command-line program.

license

MIT

Keywords

FAQs

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Package last updated on 07 May 2014

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Install

html-select

html-select

example