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The JavaScript contained within a web page is viewable to any visitor that decides to look for it. Even when the JavaScript is contained within a .js file that is imported into a web page, that file can be downloaded and viewed at will.
JavaScript obfuscation refers to a technique that is commonly used to obscure the operation and intent of JavaScript code contained within a web page. Consider, for example, the JavaScript detection code introduced in the Basic [http://www.ebookfrenzy.com/AdBlocking/index.html Ad Blocker Detection Techniques] chapter of this book:
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