Javascript meal counter .toFixed 加逗号

Question

<script>
var START_DATE = new Date("January 01, 2013 00:00:00");
var INTERVAL = 0.25;
var INCREMENT = 0.001;
var START_VALUE = 0;
var count = 0;
function addCommas(str){
   var arr,int,dec;
   str += '';

   arr = str.split('.');
   int = arr[0] + '';
   dec = arr.length>1?'.'+arr[1]:'';

   return int.replace(/(\d)(?=(\d{3})+$)/g,"$1,") + dec;
}window.onload = function(){
 var msInterval = INTERVAL * 1000;
 var now = new Date();
 count = parseInt((now - START_DATE)/msInterval) * INCREMENT + START_VALUE;
 document.getElementById('counter').innerHTML = addCommas(count);
 setInterval("count += INCREMENT; document.getElementById('counter').innerHTML =     addCommas(count);", msInterval);
}
</script>
<div id="counter"> 30k</div>

我必须将 .toFixed(2) 放在哪里才能让我们的非营利组织的送餐柜台仅显示小数点后两位。我尝试了很多不同的地方，但不确定 .toFixed 是否是正确的解决方案。请协助

Answer 1

将其放入您的 addCommas 函数中:

function addCommas(str){
    var arr,int,dec;
    str += '';

    arr = str.split('.');
    int = arr[0] + '';
    dec = arr.length>1?'.'+arr[1]:'';
    return int.replace(/(\d)(?=(\d{3})+$)/g,"$1,") + '.' + parseFloat(dec).toFixed(2).split('.')[1];
}