JS 添加千分位与去掉千分位的示例

function commafyback(num) 
{ 
var x = num.split(','); 
return parseFloat(x.join("")); 
} 
function commafy(num) 
{ 
num = num.toFixed(2) +""; 
var re=/(-?/d+)(/d{3})/ 
while(re.test(num)){ 
num=num.replace(re,"$1,$2"); 
} 
return num; 
}