Webscraping With Js

Web scraping is something I considered back when I was working with Python and found out about BeautifulSoup and Scrapy. When a website doesn't have a way to request/retrieve information programmatically (like with an API), an alternative way of 'requesting' the data is by scraping it, or collecting it by using a program or script. There are legal considerations when it comes to web scraping, so I'll start this off by sharing a video about that:

The latest information about the legality of web scraping based on a court decision is 'any data that is publicly available and not copyrighted is fair game for web crawlers':

Now that you've watched and read that, here's a video that explains what web scraping is:

Here's some more detailed info from Wikipedia.

Web scraping is something I considered back when I was working with Python and found out about BeautifulSoup and Scrapy. When a website doesn't have a way to request/retrieve information programmatically (like with an API), an alternative way of 'requesting' the data is by scraping it, or collecting it by using a program or script. There are legal considerations when it comes to web scraping. 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.

Web scraping with java

Okay, so now you know what you're legally able to scrape and what web scraping is. So how do you do it with JavaScript? I've done a bit of searching and put together a list of resources that show you how. Here they are, articles and videos listed from newest (June 2020) to oldest (January 2017):

Keep in mind that older resources means older info and methods that might not work with today's technologies, but they still offer an insight into the 'how to' of web scraping with JavaScript.

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  • Let’s use Cheerio.js to extract the h2 tags from the page. Output: Additional Resources. And there’s the list! At this point you should feel comfortable writing your first web scraper to gather data from any website. Here are a few additional resources that you may find helpful during your web scraping journey: List of web scraping proxy.
  • Learn how to do basic web scraping using Node.js in this tutorial. The request-promise and cheerio libraries are used.💻 Github: https://github.com/beaucarne.
  • In this tutorial you’ll learn how to automate and scrape the web with JavaScript. To do this, we’ll use Puppeteer. Puppeteer is a Node library API that allows us to control headless Chrome. Headless Chrome is a way to run the Chrome Browser without actually running Chrome.

Scrape Html

Web scraping is something I considered back when I was working with Python and found out about BeautifulSoup and Scrapy. When a website doesn't have a way to request/retrieve information programmatically (like with an API), an alternative way of 'requesting' the data is by scraping it, or collecting it by using a program or script. There are legal considerations when it comes to web scraping, so I'll start this off by sharing a video about that:

The latest information about the legality of web scraping based on a court decision is 'any data that is publicly available and not copyrighted is fair game for web crawlers':

Now that you've watched and read that, here's a video that explains what web scraping is:

With

Here's some more detailed info from Wikipedia.

Okay, so now you know what you're legally able to scrape and what web scraping is. So how do you do it with JavaScript? I've done a bit of searching and put together a list of resources that show you how. Here they are, articles and videos listed from newest (June 2020) to oldest (January 2017):

Web Scraping With Javascript

Keep in mind that older resources means older info and methods that might not work with today's technologies, but they still offer an insight into the 'how to' of web scraping with JavaScript.

Web Scraping With Jsdom

Thanks for checking out this post!