Crawling js loading content problem

I now encounter js dynamic loading content: there are only three crawling methods:
1: use the browser to crawl
2: look at the js source code, parse the parameters
3: sometimes the relevant parameters will appear in other parts of the page, carefully look for
is there a fourth way? The first is a bit bulky, the second is demanding, and the third depends on luck and cannot be used in general. Thank you

Aug.23,2021

splash. After rendering the js through a proxy, the static HTML file is passed back to the client.

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