the jsfuck.js parses the obfuscated string to generate valid javascript code. One one the patterns that jsfuck.js supports is "run the followin as eval()" https

the jsfuck.js parses the obfuscated string to generate valid javascript code. One one the patterns that jsfuck.js supports is "run the followin as eval()" https://github.com/aemkei/jsfuck/blob/master/jsfuck.js https://github.com/aemkei/jsfuck/blob/master/jsfuck.js line 282