jjencode - Javascript Obfuscation

Today, I try a challenge where I need to decode the jjencode text. I know that it is javascript obfuscation, but I dont know where to find the correct decoder since I search with a wrong keyword. Lol!

Then when I found the decoder, I try to decode the text, and got the flag. For example this challenge soooomixeddd, where I need to decode the jjencode.

So how to make javascript unreadable? This web can help you do so. Actually there are many webs/tools that are provide this services. To decode it, you can use toos such as python-jjdecoder or Decoder-JJEncode.

For example :

Javascript code :

window.alert("Hello Programmer!");

jjencode :

$=~[];$={___:++$,$$$$:(![]+"")[$],__$:++$,$_$_:(![]+"")[$],_$_:++$,$_$$:({}+"")[$],$$_$:($[$]+"")[$],_$$:++$,$$$_:(!""+"")[$],$__:++$,$_$:++$,$$__:({}+"")[$],$$_:++$,$$$:++$,$___:++$,$__$:++$};$.$_=($.$_=$+"")[$.$_$]+($._$=$.$_[$.__$])+($.$$=($.$+"")[$.__$])+((!$)+"")[$._$$]+($.__=$.$_[$.$$_])+($.$=(!""+"")[$.__$])+($._=(!""+"")[$._$_])+$.$_[$.$_$]+$.__+$._$+$.$;$.$$=$.$+(!""+"")[$._$$]+$.__+$._+$.$+$.$$;$.$=($.___)[$.$_][$.$_];$.$($.$($.$$+"\""+"\\"+$.__$+$.$$_+$.$$$+"\\"+$.__$+$.$_$+$.__$+"\\"+$.__$+$.$_$+$.$$_+$.$$_$+$._$+"\\"+$.__$+$.$$_+$.$$$+"."+$.$_$_+(![]+"")[$._$_]+$.$$$_+"\\"+$.__$+$.$$_+$._$_+$.__+"(\\\"\\"+$.__$+$.__$+$.___+$.$$$_+(![]+"")[$._$_]+(![]+"")[$._$_]+$._$+"\\"+$.$__+$.___+"\\"+$.__$+$._$_+$.___+"\\"+$.__$+$.$$_+$._$_+$._$+"\\"+$.__$+$.$__+$.$$$+"\\"+$.__$+$.$$_+$._$_+$.$_$_+"\\"+$.__$+$.$_$+$.$_$+"\\"+$.__$+$.$_$+$.$_$+$.$$$_+"\\"+$.__$+$.$$_+$._$_+"!\\\");"+"\"")())();

jjdecode :