Javascript obfuscation techniques by example

JavaScript obfuscation techniques by example

摘要

Sometimes when working on scraping some website you look into JavaScript code and it looks like a complete mess that is impossible to read - no matter how much you squint, you cannot make sense of it. That’s because it has been obfuscated. Code obfuscation is a transformation that is meant to make code difficult to read and reverse engineer. Many web sites utilize JavaScript obfuscation to make things difficult to scraper/automation developers.