De-obfuscate Javascript code to make it readable again

Question

I hate to bring this here, while doing the learning of obfuscating the JS code, I encoded my code and then over wrote the orginal one without any backup :) Following is my o

Answer 1

I have tried both of online jsbeautifier(jsbeautifier, jsnice), these tools gave me beautiful js code,

but couldn't copy for very large js (must be bug, when i copy, copied buffer contains only one character '-').

I found that only working solution was prettyjs:

http://www.thaoh.net/prettyjs/