javascript把数字每隔三位加逗号分开
function addCommas(nStr){ nStr += ''; x = nStr.split('.'); x1 = x[0]; x2 = x.length > 1 ? '.' + x[1] : ''; var rgx = /(\d+)(\d{3})/; while (rgx.test(x1)) { x1 = x1.replace(rgx, '$1' + ',' + '$2'); } return x1 + x2;}参考资料:http://www.mredkj.com/javascript/nfbasic.html?有没有小数点通吃
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