สอบถามเรื่องการใส่คอมม่าขั้นให้กับข้อมูล โดยใช้ JavaScript

<script type="text/javascript">
function CommaFormatted(amount)
{
	var delimiter = ","; // replace comma if desired
	amount = amount.replace(delimiter, "");
	var a = amount.split('.',2)
	var d = a[1];
	var i = parseInt(a[0]);
	if(isNaN(i)) { return ''; }
	var minus = '';
	if(i < 0) { minus = '-'; }
	i = Math.abs(i);
	var n = new String(i);
	var a = [];
	while(n.length > 3)
	{
		var nn = n.substr(n.length-3);
		a.unshift(nn);
		n = n.substr(0,n.length-3);
	}
	if(n.length > 0) { a.unshift(n); }
	n = a.join(delimiter);
	if(typeof d == "undefined") { amount = n; }
	else { amount = n + '.' + d; }
	amount = minus + amount;
	return amount;
}

function calltotal_pay2(obj){
	obj.value = CommaFormatted(obj.value);
}
</script>

***ต้องเรีกยใช้งานอย่างไรครับ



<form action="" id="from_pay2" name="from_pay2" method="get">
<input name="pay_jay1" type="text" value="" onblur="calltotal_pay2(this);">
<input name="pay_jay" type="text" value="">
</form>

<script type="text/javascript">
function Numbers(e){
	var keynum;
	var keychar;
	var numcheck;
	if(window.event) {// IE
	  keynum = e.keyCode;
	}
	else if(e.which) {// Netscape/Firefox/Opera
	  keynum = e.which;
	}
	if(keynum == 13 || keynum == 8 || typeof(keynum) == "undefined"){
			return true;
	}
	keychar= String.fromCharCode(keynum);
	numcheck = /^[0-9]$/;
	return numcheck.test(keychar);
}

function CommaFormatted(amount)
{
	var delimiter = ","; // replace comma if desired
	amount = amount.replace(delimiter, "");
	var a = amount.split('.',2)
	var d = a[1];
	var i = parseInt(a[0]);
	if(isNaN(i)) { return ''; }
	var minus = '';
	if(i < 0) { minus = '-'; }
	i = Math.abs(i);
	var n = new String(i);
	var a = [];
	while(n.length > 3)
	{
		var nn = n.substr(n.length-3);
		a.unshift(nn);
		n = n.substr(0,n.length-3);
	}
	if(n.length > 0) { a.unshift(n); }
	n = a.join(delimiter);
	if(typeof d == "undefined") { amount = n; }
	else { amount = n + '.' + d; }
	amount = minus + amount;
	return amount;
}

function calltotal_pay2(){
	var pay_jay1 = Math.ceil(document.getElementById("pay_jay1").value.replace(/,/g, ''));
	var pay_jay2 = Math.ceil(document.getElementById("pay_jay").value.replace(/,/g, ''));

	var total = pay_jay1+pay_jay2;

	document.getElementById("pay_jay_total").value = CommaFormatted(total.toString());
}
</script>





<form action="" id="from_pay2" name="from_pay2" method="get">
<input id="pay_jay1" name="pay_jay1" type="text" value="" onchange="calltotal_pay2();" onkeypress="return Numbers(event)">
<input id="pay_jay" name="pay_jay" type="text" value="" onchange="calltotal_pay2();" onkeypress="return Numbers(event)">

<input id="pay_jay_total" name="pay_jay_total" type="text" value="">
</form>