August 2025
Intermediate to advanced
372 pages
8h 31m
English
Content preview from Node.js Projects
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 9. Web Scraper
This chapter covers the following:
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Scraping contents from an HTML website
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Running a headless browser
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Collecting scraped data and offering it as an API
In this chapter, you’ll build a web scraper to collect contents of HTML websites and process them in your Node server. Web scraping is the process of extracting data from a website and has existed for nearly as long as the internet itself.
Before APIs were made public and accessible by businesses, the only way to get updated product pricing, immediate news headlines, and static web content was by manually visiting a web URL and looking directly at the resulting web page; kind of like how we still mostly use the internet today.
There are now more ways to process and use data than ever before, but still not enough APIs to feed those processing systems. Even where APIs exist, restrictions in the type of data an end user has access to may be limited. For example, a food delivery service may provide an API for the top restaurants in a neighborhood, but not allow for filtering by dietary restrictions. To get that data, you could, alternatively, visit the URL for results filtered by dietary restriction and scrape the resulting contents. In this chapter, you’ll explore the options available within the Node ecosystem to allow for scraping web pages and using that data in your own application.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.