add some js q&a by @xufei

Author: paddingme

README.md

@@ -31,6 +31,7 @@
 |19.md|[再来5个JavaScript面试题](http://web.jobbole.com/81785/)|JavaScript|待添加 :smile:|
 |20.md| [BAT web前端开发方向校招都考些什么？](http://www.zhihu.com/question/26188893)|General|待添加 :smile: |
 |21.md| [ELE 笔试题](https://github.com/sofish/hire)|General|待添加 :smile: |
+|22.md| [一些JS题目的解答](https://github.com/xufei/blog/blob/master/posts/2013-12-02-%E4%B8%80%E4%BA%9BJS%E9%A2%98%E7%9B%AE%E7%9A%84%E8%A7%A3%E7%AD%94.md)|JavaScript|待添加 :smile: |
 
 ## 前端面经部分