We will pass the HTML to cheerio and then query it as we would in a browser environment. If you use TypeScript, they "include TypeScript definitions and a type guard for Axios errors."Ĭheerio is a "fast, flexible & lean implementation of core jQuery." It lets us find nodes with selectors, get text or attributes, and many other things. It allows several options such as headers and proxies, which we will cover later. We are using Node v12, but you can always check the compatibility of each feature.Īxios is a "promise based HTTP client" that we will use to get the HTML from a URL. npm install axios cheerio playwright Introduction After that, install all the necessary libraries by running npm install. Prerequisitesįor the code to work, you will need Node (or nvm) and npm installed. And finally, parallelize the tasks to go faster thanks to Node's event loop. We will combine them to build a simple scraper and crawler from scratch using Javascript in Node.js.Īvoiding blocks is an essential part of website scraping, so we will also add some features to help in that regard. Javascript and web scraping are both on the rise.
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