reverse-engineering - 你怎么理解不是你写的javascript代码

Question

假设您有 200 页代码。或任何数量。但不是你写的。因此，在 javascript 中，任何事情都可以在任何地方完成。你是如何阅读和理解的？解码或逆向工程。有什么工具在这个过程中有所帮助？一般来说，我发现阅读我旁边的任何其他代码是不可能的，除非它少于半页。

Answer 1

What I typically do is follow the call-in logic from outer layers of code inward and instead of trying to grok thousands of lines of someones program, I try to figure out how the pieces I need to work on function.

You don't read code top-down like you read a book (pages?), you follow calls (initially you can ignore class instantiation) from the outmost position inwards. JavaScript is not a nice language in this regard but still if a compiler/interpreter can read it, so can you.

It's important to write readable code, and as a professional you should, on a policy level, expect that from other people, but on a technical level, you need to be able to cut through the bushes.

Answer 2

如果您对 javascript 有任何具体问题，您需要了解函数式编程、jquery 等。把它贴在这里。