ffs

I am honestly getting slightly beaten down by Javascript 8. I don't really understand I viewed the source and found the secret but like it won't decode and do what it is supposed to I have tried a few things but I am just straight lost. I have tried h** to as*** but that gave me symbols that did nothing can someone maybe give me some help or a smack on the head if I am being stupid.

"It won't decode………  it gave me symbols that did nothing" It did decode,  and those symbols it gave you are the converted characters.

It did nothing, because a character in the string wasn't converted correctly.

The reason being  most online converters dont use the full ascii table . If only there was a copy of the full table online somewhere.