如何使用BeautifulSoup和Python调用JavaScript函数 [英] How to call JavaScript function using BeautifulSoup and Python

问题描述

作为我的项目的一部分，我正在执行Web抓取以从网站中获取数据.我可以提出请求并获取dom中存在的数据.但是，一些数据正在javascript onClick函数上呈现.

一种方法可能是，使用硒单击链接(调用javascript函数)并获取呈现的数据，但是此过程很耗时，我不想打开浏览器.

除了硒以外，还有其他方法可以实现这一目标吗?

网站:

您现在可以看到JavaScript从该URL下载新的HTML.您可以使用urllib轻松发送相同的请求.

I am performing web scraping to grab data from a website as part of my project. I can make the request and grab the data which is present in the dom. However, some data is getting rendered on javascript onClick function.

One way could be, using the selenium to click on the link (which calls the javascript function) and grab the rendered data, but this process is time-consuming, and I don't want to open the browser.

Is there any way other than selenium to achieve this?

Website: http://catalog.fullerton.edu/preview_entity.php?catoid=16&ent_oid=1849

In the courses section of this webpage, all the courses are hyperlinks, and as soon as someone clicks on the courses, a javascript method gets called. I need the data which gets rendered after the javascript function call.

解决方案

You can't. If you want to run JavaScript, you'll need to use a headless browser. Otherwise, you'll have to disassemble the JavaScript and see what it does.

Click on the element while your browser's developer tools are open in the Network tab:

You can now see that the JavaScript downloads new HTML from that URL. You can easily send the same request with urllib.

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