You can even open Chrome DevTools to inspect the test environment. Puppeteer shines when it comes to debugging: flip the headless bit to false, add slowMo, and you’ll see what the browser is doing. If (atag & atag.textContent = '在文件夹中显示'), // polling? yes. Puppeteer v1.5.0 also exposes browser contexts, making it possible to efficiently parallelize test execution. This makes Puppeteer an ideal tool for web scraping and test automation.

Every tasks that you can perform with a Chrome browser can be automated with Puppeteer. if finish than return true if fail clickĬonst dm = document.querySelector('downloads-manager').shadowRootĬonst firstItem = dm.querySelector('#frb0')Ĭonst thatArea = ('.controls') Puppeteer is an open source Node library that provides a high-level API to control Chrome or Chromium based browsers over the DevTools Protocol. monitoring the state of the first download item But you can easily adapt it to 'infinite threads' by iterating through all download items ( #frb0~ #frbn) in that page, well, take care of your network:) dmPage = await browser.newPage()Īwait your_download_button.click() // start downloadĪwait dmPage.bringToFront() // this is necessary This example is 'single thread' currently, because it's only monitoring the first item appear in the download manager page. Quickstart If you are short in time, just download the library from the github repository and follow the instructions there. This solution can be very easily to auto restart a failed download using chrome's own feature Puppeteer is a Node library which uses the DevTools Protocol in order to control chrome browsers (Or any other browser that implements the DevTools Protocol).

My solution is to use chrome's own chrome://downloads/ page to managing download files. Method 1: Set the Download Behavior To download a file with Puppeteer using headless mode, you can set the download behavior using the () method. It also has 'smarter' locator, which examine selectors every time before click() Use Playwright to get away from this mass.

Here we generate a CSV file and have the browser download it await page.It's 2022. Const puppeteer = require ( 'puppeteer' ) Ĭonst browser = await puppeteer.launch()

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