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Free download puppeteer docs8/21/2023 Puppeteer provides methods page.click to click a DOM element and page.type to type text. You should see the HTML representing this element as a modal-footer class with a button element as its direct child. If you left-click on an element in your browser of choice, you should see an option that says something along the lines of "Inspect Element". Let's take a closer look to come up with a good CSS selector to access the modal button directly in code. We will use this later.īefore moving on, we're going to have to get rid of this modal element to work with the rest of the page to get useful information. For that purpose, there's also a page.waitForSelector() function that takes a specific CSS selector and waits for an element fitting that description to appear. You want to be sure that you're not going to try interacting with things on the page that don't exist yet. This is necessary in some cases to make your scripts interact with pages in a way that is more "human", especially on pages that have animations which could take time to finish. You can use the page.waitFor() function to have your headless browser script wait a number of milliseconds before running other commands. It should look something like this:ĭepending on how fast the code runs, your screenshot might look different if the disclaimer modal element didn't have enough time to finish popping up. After a couple of seconds, open the example.png image that it saved. Run the code with node index.js in your terminal from the same directory that the code is saved in. Navigate to the directory where you want this code to live and run the following command in your terminal to create a package for this project: Setting up dependenciesīefore moving on, you will need to make sure you have an up to date version of Node.js and npm installed. We'll write code to programmatically type in an address and figure out which Native land corresponds to that location. In this case, an API does exist, but it only takes location data in the form of geo-coordinates rather than a more user-friendly address. In this example we'll use the Native Land Digital tool, an awesome project built to help people learn more about their local indigenous history. Let's walk through how to use Puppeteer to write scripts to interact with web pages programmatically. Fortunately for developers everywhere, most things that you can do manually in the browser can be done using Puppeteer, a Node library which provides a high-level API to control Chrome or Chromium over the DevTools protocol. Web scraping can be useful in these situations, but only if this data can be accessed statically on a web page. Sometimes the data you need is available online, but not through a public API.
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