JavaScript's escape characters.

Character Translation
\b Backspace
\f Form feed
\n New line
\r Carriage return
\t Tab
\' Single quote or apostrophe (')
\" Double quote (")
\\ Backslash (\)
\XXX XXX is an octal number (between 0 and 377) that represent the Latin-1 character equivalent. For example \251 is the octal code for the copyright symbol.
\xXX XX is a hexadecimal number (between 00 and FF) that represent the Latin-1 character equivalent. For example \xA9 is the hexadecimal code for the copyright symbol.
\uXXXX XXXX is a hexadecimal number (between 00 and FF) that represent the Unicode character equivalent. For example \u00A9 is the hexadecimal code for the copyright symbol.
(Note: Unicode is only supported by JavaScript 1.3)