?function commafy(num) { ?????return num && num ?????????.toString() ?????????.replace(/(\d)(?=(\d{3})+\.)/g, function($0, $1) { ?????????????return $1 + ","; ?????????}); ?} ?console.log(commafy(1234567.90)); //1,234,567.90用js实现千位分隔符?
原文地址：http://www.cnblogs.com/samsara-yx/p/7904407.html