一.去掉千分位

 function removeThousands(num) { var x = num.split(‘,‘); return parseFloat(x.join("")); }

二.添加千分位

 function addThousands(num) { var reg = /\d{1,3}(?=(\d{3})+$)/g; if ( num &&num.toString().indexOf(‘.‘) == -1) { return (num + ‘‘).replace(reg, ‘$&,‘); } else { return num.toString().replace(/(\d)(?=(\d{3})+\.)/g, function ($0, $1) { return $1 + ","; }); } }