We first have to download the page as a whole. Sticking to our previous “noodle dish” example, this process usually involves two steps:

When using this term in the software industry, we usually refer to the automation of this manual task by using a piece of software. Hence, if you copy and paste a recipe of your favorite noodle dish from the internet to your personal notebook, you are performing web scraping. It merely describes the process of extracting information from a website. All of us use web scraping in our everyday lives. Let’s start with a little section on what web scraping actually means. In this tutorial, we will build a web scraper that can scrape dynamic websites based on Node.js and Puppeteer.

However, when it comes to dynamic websites, a headless browser sometimes becomes indispensable. To wait for all downloads to complete with Puppeteer using request interception, you can use the request event to intercept all network requests made by the browser and track when they are finished.For a lot of web scraping tasks, an HTTP client is enough to extract a page’s data. Finally, we close the browser instance.īy using the download event, we can wait for all downloads to complete with Puppeteer in a reliable and efficient way. We then navigate to the page that initiates the download and wait for all downloads to complete using the waitForDownload method. We add a listener to the download event to log when a download is completed. We then set the download behavior for the page to allow downloads and specify the download path. In this code, we first create a new browser instance using Puppeteer and a new page. send ( 'tDownloadBehavior', ) await page. Const puppeteer = require ( 'puppeteer' ) const browser = await puppeteer.

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