JS添加千分位与去掉千分位的示例_javascript技巧

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;
}