String toFixed with javascript?
I have a number which I needed to format as currency, to do this im having to turn my number into a string and run a function, This is working but its showing to X decimal places, Is it possible to use 'toFixed' on a string at all? I've tried with no luck and im unsure how to turn the string back into a number, I've used parseInt only it stops at the first character as it doesnt read past my delimeter...

       
    var amount = String(EstimatedTotal);
    var delimiter = ","; // replace comma if desired
	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(d.length < 1) { amount = n; }
	else { amount = n + '.' + d; }
	amount = minus + amount;
  
at the moment the amount variable showing as 1,234,567.890123

  
String toFixed with javascript?
===

I have a number which I needed to format as currency, to do this im having to turn my number into a string and run a function, This is working but its showing to X decimal places, Is it possible to use 'toFixed' on a string at all? I've tried with no luck and im unsure how to turn the string back into a number, I've used parseInt only it stops at the first character as it doesnt read past my delimeter...

       
    var amount = String(EstimatedTotal);
    var delimiter = ","; // replace comma if desired
	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(d.length < 1) { amount = n; }
	else { amount = n + '.' + d; }
	amount = minus + amount;
  
at the moment the amount variable showing as 1,234,567.890123

  