Reverse/obfuscatedJS/obfuscatedJS.html

<html>
<head>
    <title>Obfuscation JS</title>
    <script type="text/javascript">
    function atobctod(pass_enc){
        var pass = "116,104,105,115,105,115,110,111,116,97,102,108,97,103,";
        var tab  = pass_enc.split(',');
                var tab2 = pass.split(',');
                var i,j,k,l=0,m,n,o,p = "";
                i = 0;
                j = tab.length;
                k = j + (l) + (n=0);
                n = tab2.length;
                for(i = (o=0); i < (k = j = n); i++ )
                {
                    o = tab[i-l];
                    p += String.fromCharCode((o = tab2[i]));
                    if(i == 5)break;
                }
                for(i = (o=0); i < (k = j = n); i++ )
                {
                o = tab[i-l]; 
                if(i > 5 && i < k-1)
                p += String.fromCharCode((o = tab2[i]));
                        }
        p += String.fromCharCode(tab2[17]);
        pass = p;
        return pass;
    }
    String["fromCharCode"](atobctod(window.atob("NzcsNzksNjcsODMsNjcsODQsNzAsMTIzLDgyLDY5LDk1LDQ4LDk4LDEwMiwxMTcsMTE1LDk5LDY0LDExNiwxMDgsNzksMTEwLDk1LDc0LDUzLDEyNQ")));
    
    h = window.prompt('Reverse the password');
    alert(atobctod(h));
    
</script>
</head>
</html>