javascript把数字格式化转换成货币型

function outputMoney(number) {number=number.replace(/\,/g,"");if (isNaN(number)||number=="") return "";number = Math.round(number*100) /100;if(number<0)return '-'+outputDollars(Math.floor(Math.abs(number)-0) + '') + outputCents(Math.abs(number) - 0);elsereturn outputDollars(Math.floor(number-0) + '') + outputCents(number - 0);}function outputDollars(number){if (number.length<= 3)return (number == '' ? '0' : number);else{var mod = number.length%3;var output = (mod == 0 ? '' : (number.substring(0,mod)));for (i=0 ; i< Math.floor(number.length/3) ; i++){  if ((mod ==0) && (i ==0))  output+= number.substring(mod+3*i,mod+3*i+3);  else  output+= ',' + number.substring(mod+3*i,mod+3*i+3);}return (output);}}function outputCents(amount){amount = Math.round( ( (amount) - Math.floor(amount) ) *100);return (amount<10 ? '.0' + amount : '.' + amount);}