JS数字千分：
1.例子：1000--->1,000
2.实现如下：
salesToFormat: function (num) {
???????var num = (num || 0).toString(), result = ‘‘;
???????while (num.length > 3) {//拿掉num的最后三位给result
?????????result = ‘,‘ + num.slice(-3) + result;
?????????num = num.slice(0, num.length - 3);
???????}
???????if (num) {
?????????result = num + result;
???????}
???????return result;
?????}
JS数字千分
原文地址：https://www.cnblogs.com/Archer-Fang/p/9032022.html