javascript - YUI Compressor: is the obfuscation safe?

Question

YUI Compressor has an option to obfuscate local symbols (it's on by default, and you can turn it off with --nomunge. My question is: how safe is this? What are the situations (if any) where it can break code?

Answer 1

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描述

YUI Compressor 是一个 JavaScript 压缩器，除了删除注释和空格外，它还使用尽可能小的变量名来混淆局部变量。这种混淆是安全的，即使在使用诸如 'eval' 或 'with' 之类的构造时（尽管在这些情况下压缩不是最佳的）与 jsmin 相比，平均节省大约 20%。