3/2/2024 0 Comments Js web scraping![]() ![]() The advantage to using Playwright is that it is more versatile as it works with more than just one type of browser. This code should do the same thing as the code in the Puppeteer section and should behave similarly. On top of that, if you need a little more granularity, you can write functions to filter through the content of elements, such as this one for determining whether a hyperlink tag refers to a MIDI file: Regular expressions are also very useful in many web scraping situations. ![]() This is often done using CSS selectors, which you will see throughout the code examples in this tutorial, to gather HTML elements that fit a specific criteria. You will also frequently need to filter for specific content. If you right-click on the element you're interested in, you can inspect the HTML behind that element to get more insight. There are helpful developer tools available to you in most modern browsers. Every web page is different, and sometimes getting the right data out of them requires a bit of creativity, pattern recognition, and experimentation. Let's try finding all of the links to unique MIDI files on this web page from the Video Game Music Archive with a bunch of Nintendo music as the example problem we want to solve for each of these libraries.īefore moving onto specific tools, there are some common themes that are going to be useful no matter which method you decide to use.īefore writing code to parse the content you want, you typically will need to take a look at the HTML that’s rendered by the browser.
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