js将数值格式化成金额形式

/**

* 将数值四舍五入(保留2位小数)后格式化成金额形式

*

* @param num 数值(Number或者String)

* @return 金额格式的字符串,如'1,234,567.45'

* @type String

*/

function formatCurrency(num) {

num = num.toString().replace(/\$|\,/g,'');

if(isNaN(num))

num = "0";

sign = (num == (num = Math.abs(num)));

num = Math.floor(num*100+0.50000000001);

cents = num%100;

num = Math.floor(num/100).toString();

if(cents<10)

cents = "0" + cents;

for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)

num = num.substring(0,num.length-(4*i+3))+','+

num.substring(num.length-(4*i+3));

return (((sign)?'':'-') + num + '.' + cents);

}

/**

* 将数值四舍五入(保留1位小数)后格式化成金额形式

*

* @param num 数值(Number或者String)

* @return 金额格式的字符串,如'1,234,567.4'

* @type String

*/

function formatCurrencyTenThou(num) {

num = num.toString().replace(/\$|\,/g,'');

if(isNaN(num))

num = "0";

sign = (num == (num = Math.abs(num)));

num = Math.floor(num*10+0.50000000001);

cents = num%10;

num = Math.floor(num/10).toString();

for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)

num = num.substring(0,num.length-(4*i+3))+','+

num.substring(num.length-(4*i+3));

return (((sign)?'':'-') + num + '.' + cents);

}