how to parse website with Node JS ?

npm install osmosis

var osmosis = require('osmosis');
osmosis
.get('www.jquery.org')
.log(console.log)
.error(console.log)
.debug(console.log)

npm install request 
npm install cheerio

    const request = require('request');
    const cheerio = require('cheerio');

request('http://www.example.com', function (error, response, html) {
        if (!error && response.statusCode == 200) {
            var $ = cheerio.load(html);
   $('script').each(function (i, element) { 
      a = $(this);
alert(a.text());
            });
}
});

  var $ = cheerio.load(html);

$('#data').children().first().text()

$('#data').find('li').length