อยากทราบวิธีการนำสคิป commas ไปวางไป ช่วยสอนหน่อยค่ะ

<script language="JavaScript">
function addCommas(nStr)
{
nStr += '';
x = nStr.split('.');
x1 = x[0];
x2 = x.length > 1 ? '.' + x[1] : '';
var rgx = /(\d+)(\d{3})/;
while (rgx.test(x1)) {
x1 = x1.replace(rgx, '$1' + ',' + '$2');
}
return x1 + x2;
}
 
function chkNum(ele)
{
var num = parseFloat(ele.value);
ele.value = addCommas(num.toFixed(2));
}
</script>
<input type="text" style="width: 98px;" class="inputbox qsplow" onfocus="if(this.value=='Minimum') this.value='';" 
onblur="if(this.value=='') this.value='Minimum';" else this.value=addCommas(this.value); value="Minimum" onkeypress="return isNumberKey(event)" name="price_low">