[SOLVED]Datagrid formatter problem

[Pierre]

Hello all
I have simple table column:

Code:

<th field="quantity" data-options="formatter:formatdecimal">Quantity</th>

formatdecimal looks like this:

Code:

Number.prototype.format = function(n, x, s, c) {
  var re = '\\d(?=(\\d{' + (x || 3) + '})+' + (n > 0 ? '\\D' : '$') + ')',
  num = this.toFixed(Math.max(0, ~~n));
  return (c ? num.replace('.', c) : num).replace(new RegExp(re, 'g'), '$&' + (s || ','));
};

function		formatdecimal(num){
  return num.format(2, 3, '.', ',');																	
}

and it says "Uncaught TypeError: num.format is not a function"
What is the problem?
Here is original code:
http://jsfiddle.net/hAfMM/612/
Is there any other option to format numbers like 123.456,78
(group separator point, decimal separator comma)

Thank you

[stworthy]

You must convert to 'number' type before calling your 'format' function.

Code:

function formatdecimal(num){
  return parseInt(num).format(2, 3, '.', ',');																	
}

[Pierre]

Awesome. Thank you.