<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
<script>
$(document).ready(function(){
var v='aabbc11asd你你++好';
//var reg=/(\w)\1/g; //仅数字和字母
var reg=/(.+)\1/g;
var r=v.replace(reg,"$1");
// abc1asd你+好
alert(r);
});
</script>
参考
Js&Vbs正则表达式替换重复的字符
http://xzd.2000y.net/mb/1/ReadNews.asp?NewsID=573013
正则表达式后向引用详解
http://linux.chinaunix.net/techdoc/develop/2008/09/04/1030407.shtml