/** 去字符两端空格 开始 *@author 敖士伟 *@version v1.0 *@date 2009/11/14 22:51 */ String.prototype.trim = function() { var r = this.replace(/(^\s*)|(\s*$)/g, ""); r = Lremoveblank(r); r = Rremoveblank(r); return r; } function Lremoveblank(s) { if (s.length == 1 && s.charCodeAt(0) == 160) return ""; if (s.charCodeAt(0) == 160) { s = s.substr(1, s.length - 1); return removeblank(s); } else { return s; } } function Rremoveblank(s) { if (s.length == 1 && s.charCodeAt(0) == 160) return ""; if (s.charCodeAt(s.length-1) == 160) { s = s.substr(0, s.length - 1); return Rremoveblank(s); } else { return s; } } //--去字符两端空格 结束 //e.g. var a = "  a  "; alert("b" + a.trim() + "b");