實例如下：
/** * 數字格式轉換成千分位*@param{Object}num */function commafy(num){ if((num+"").Trim()==""){ return""; } if(isNaN(num)){ return""; } num = num+""; if(/^.*/..*$/.test(num)){ varpointIndex =num.lastIndexOf("."); varintPart = num.substring(0,pointIndex); varpointPart =num.substring(pointIndex+1,num.length); intPart = intPart +""; var re =/(-?/d+)(/d{3})/ while(re.test(intPart)){ intPart =intPart.replace(re,"$1,$2") } num = intPart+"."+pointPart; }else{ num = num +""; var re =/(-?/d+)(/d{3})/ while(re.test(num)){ num =num.replace(re,"$1,$2") } } return num;}/** * 去除千分位*@param{Object}num */function delcommafy(num){ if((num+"").Trim()==""){ return""; } num=num.replace(/,/gi,''); returnnum;}以上這篇JS實現數字格式千分位相互轉換方法就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持武林網。