<script language="JavaScript"> n="1279834847944074100465236.33" re=/(\d{1,3})(?=(\d{3})+(?:$|\.))/g n1=n.replace(re,"$1,") alert(n+"\r\n"+n1) document.write(n+"\r\n"+n1); </script>
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JS加千分符
原文：http://www.cnblogs.com/kevin1988/p/3713716.html
