https://blog.youkuaiyun.com/xyq3949zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/xyq3949/article/details/73511649https://blog.youkuaiyun.com/xyq3949/article/details/73511649xyq3949Tue, 20 Jun 2017 19:40:58 +0800 "h": the first character. s.charAt(s.length-1) // => "d": the last character. s.substrin]]>https://blog.youkuaiyun.com/xyq3949/article/details/73321553https://blog.youkuaiyun.com/xyq3949/article/details/73321553xyq3949Fri, 16 Jun 2017 09:43:39 +0800https://blog.youkuaiyun.com/xyq3949/article/details/72780733https://blog.youkuaiyun.com/xyq3949/article/details/72780733xyq3949Sat, 27 May 2017 13:44:23 +0800https://blog.youkuaiyun.com/xyq3949/article/details/72639321https://blog.youkuaiyun.com/xyq3949/article/details/72639321xyq3949Tue, 23 May 2017 14:17:06 +0800https://blog.youkuaiyun.com/xyq3949/article/details/72626571https://blog.youkuaiyun.com/xyq3949/article/details/72626571xyq3949Mon, 22 May 2017 15:05:46 +0800https://blog.youkuaiyun.com/xyq3949/article/details/72625159https://blog.youkuaiyun.com/xyq3949/article/details/72625159xyq3949Mon, 22 May 2017 11:53:22 +0800https://blog.youkuaiyun.com/xyq3949/article/details/72379775https://blog.youkuaiyun.com/xyq3949/article/details/72379775xyq3949Wed, 17 May 2017 14:11:43 +0800https://blog.youkuaiyun.com/xyq3949/article/details/71213491https://blog.youkuaiyun.com/xyq3949/article/details/71213491xyq3949Fri, 05 May 2017 16:00:02 +0800