![]() 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. Things are going to break, and you are going to try to search the errors which are nowhere to be found, look at puppeteer source code and see you aren't doing anything different, but guess what, since you used page._nd(.For a lot of web scraping tasks, an HTTP client is enough to extract a page’s data. Things might work when you use page._client, but when you start to try to implement some of the low level features of the devtools protocol by yourself, there are going to be some collisions and bugs that arises that aren't documented anywhere and you will be left scratching your head wondering if chrome devtools is so broken.Įxample of this errors is like when you could try to use the Fetch domain directly to do proxy authentication instead of using thenticate(.). As people have pointed out above, it is best, if not always to avoid using page._client as it is a private API.Ĭreate your own CDP Sessions page.target().createCDPSession() to access the chrome devtools protocol directly. ![]() Page._client is used internally by puppeteer classes.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |