Tag(s) : Informatics,Internet
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Obfuscation is to divert JS classical syntax to make it unreadable (or very difficult to understand) by a human. This is a way to protect the code so that it is difficult to make reverse engineering. It's also a game to write source code with unreadable and unnatural syntax.
Go to http://dean.edwards.name/packer/ website
Copy paste this in the address bar:
Paste the obfuscated code in the lower textarea and click Decode
You will get something like:
var ..... = ......;
Replace the eval with a document.write