js 数值项目的格式化函数代码

//-------------------------------------------- 
// 删除千分点。 //-------------------------------------------- 
function removeComma(number) { 
var num = number.replace(new RegExp(",","g"),""); 
if(/^[-+]?[0-9]+(\.[0-9]+)?$/.test(num)) { 
return num; 
} else { 
return number; 
} 
} 
//-------------------------------------------- 
//添加千分点。 
//-------------------------------------------- 
function addKannma(number) { 
var num = number.replace(new RegExp(",","g"),""); 
// 正负号处理 
var symble = ""; 
if(/^([-+]).*$/.test(num)) { 
symble = num.replace(/^([-+]).*$/,"$1"); 
num = num.replace(/^([-+])(.*)$/,"$2"); 
} 
if(/^[0-9]+(\.[0-9]+)?$/.test(num)) { 
var num = num.replace(new RegExp("^[0]+","g"),""); 
if(/^\./.test(num)) { 
num = "0" + num; 
} 
var decimal = num.replace(/^[0-9]+(\.[0-9]+)?$/,"$1"); 
var integer= num.replace(/^([0-9]+)(\.[0-9]+)?$/,"$1"); 
var re=/(\d+)(\d{3})/ 
while(re.test(integer)){ 
integer　=integer.replace(re,"$1,$2") 
} 
return symble + integer　+ decimal; 
} else { 
return number; 
} 
}