我觉这题目或者解释器有问题。转义符完全无用

[You Li]

Challenge Escape Sequences in Strings has an issue.
User Agent is: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.97 Safari/537.36.
Please describe how to reproduce this issue, and include links to screenshots if possible.

My code:

var myStr; // Change this line
myStr ='\\ \t \t \r \n'; 

[You Li]

返回的值永远等于 myStr ='\ \t \t \r \n'

[胡落阳]

多谢反馈。
此题考查的是转义字符。
题目要求生成：反斜杠 制表符 退格符 回车符 换行符
上面的结果不符合题目要求，第3个应为退格符，而不是制表符。