var a="1368628429";
String.fromCharCode( a.substring(a.length-1,1).charCodeAt())=》"3"var a="ab";
String.fromCharCode( a.substring(a.length-1,1).charCodeAt())=》"\u0000"
JS 字符ASCII转换
原文：http://www.cnblogs.com/danlis/p/7856045.html
