These lesson clearly says that
FirstLine
newline
,backslash
SecondLinebackslash
,carriage-return
ThirdLine
It clearly show’s that we must first write:-
var myStr = "FirstLine\n\\SecondLine\\\rThirdLine"
After writing FirstLine \n
which mean new line as given above followed by \SecondLine\ in order to escape from \ we use \
before and after of \SecondLine\ thus it become \SecondLine\and lastly carriage-return which is
\r` followed by ThirdLine.