How to use CSS selectors in NodeJS when web scraping?

To parse web scraped content in NodeJS using CSS selectors we recommend the Cheerio library:

const cheerio = require('cheerio');

const $ = cheerio.load(`

    <h1>Page title</h1>
<p>some paragraph</p>
<a href="http://scrapfly.io/blog">some link</a>

`);

$('h1').text();
"Page title"
$('a').attribute("href");
"http://scrapfly.io/blog"

Another popular library is Osmosis which supports HTML parsing through both CSS and XPath selectors:

const osmosis = require("osmosis");

const html = `
<a class="link" href="http://scrapfly.io/">link 1</a>
<a class="link" href="http://scrapfly.blog/">link 2</a>
`
osmosis
    .parse(html)
    .find('a.link') 
    .log(console.log);