The Ultimate Guide to Web Scraping With JavaScript and Node.js

The Ultimate Guide to Web Scraping With JavaScript and Node.js

We’re going to illustrate how to perform web scraping with JavaScript and Node.js. Learn how to use the Axios and Cheerio packages to extract data from a simple website. Learn how to use a headless browser, Puppeteer, to retrieve data from a dynamic website that loads content via JavaScript.

With the massive increase in the volume of data on the Internet, this technique is becoming increasingly beneficial in retrieving information from websites and applying them for various use cases. Typically, web data extraction involves making a request to the given web page, accessing its HTML code, and parsing that code to harvest some information. Since JavaScript is excellent at manipulating the DOM (Document Object Model) inside a web browser, creating data extraction scripts in Node.js can be extremely versatile. Hence, this tutorial focuses on javascript web scraping.

In this article, we’re going to illustrate how to perform web scraping with JavaScript and Node.js.

We’ll start by demonstrating how to use the Axios and Cheerio packages to extract data from a simple website.

Then, we’ll show how to use a headless browser, Puppeteer, to retrieve data from a dynamic website that loads content via JavaScript.

What you’ll need

  • Web browser
  • A web page to extract data from
  • Code editor such as Visual Studio Code
  • Node.js
  • Axios
  • Cheerio
  • Puppeteer

Ready?

Let’s begin getting our hands dirty…

Getting Started

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A Guide to Web Scraping With JavaScript and Node.js

In this JavaScript Web Scraping tutorial, we’re going to illustrate how to perform web scraping with JavaScript and Node.js. Since JavaScript is excellent at manipulating the DOM (Document Object Model) inside a web browser, creating data extraction scripts in Node.js can be extremely versatile. We’ll start by demonstrating how to use the Axios and Cheerio packages to extract data from a simple website. Then, we’ll show how to use a headless browser, Puppeteer, to retrieve data from a dynamic website that loads content via JavaScript.

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