Did you have a question about this challenge? Can you describe, in your own words, what you are having difficulty understanding please? The more you say, the more we can help!
[LITERALLY] of course means, that the following character is to be taken as such (literally) and not interpreted as a control character, or as they say in the trade, the character needs to be escaped.
So, what character do you use in JS to replace the “[LITERALLY]”?