<script type="text/javascript"> onload = function(){ var a = "23.456322"; var aNew; var re = /([0-9]+\.[0-9]{2})[0-9]*/; aNew = a.replace(re,"$1"); alert(aNew); } </script>
正则表达式取小数点后面几位
原文：http://www.cnblogs.com/sntetwt/p/4613016.html
