摘要： //JS实现千位分隔符 function formatNumber(nbr) { if (nbr && nbr > 1000) { //1. 从后往前插进数组，然后 join(","); var newNbr = nbr.toString(); var arr = []; while (newNbr > 1000) { var idx = newNbr.indexOf("."); if (idx > -1) { //包含小数 arr.push(newNbr.substr(idx - 3, newNbr.length - 阅读全文