formating number in javascript

[Anon]

how do i set the format of a number like 45.325478
to become 45.325
or any other length before/after the decimal dot

[Anon]

Hi there,
U can use the function given below by calling it as
FormatNumber(MyNum,2,false,true).
I have got this info from 4guysfromrolla.com.

function FormatNumber(num, decimalNum, bolLeadingZero, bolParens)
/* IN - num: the number to be formatted
decimalNum: the number of decimals after the digit
bolLeadingZero: true / false to use leading zero
bolParens: true / false to use parenthesis for - num

  RETVAL - formatted number

*/
{
var tmpNum = num;

   // Return the right number of decimal places
   tmpNum *= Math.pow(10,decimalNum);
   tmpNum = Math.floor(tmpNum);
   tmpNum /= Math.pow(10,decimalNum);

   var tmpStr = new String(tmpNum);

   // See if we need to hack off a leading zero or not
   if (!bolLeadingZero && num < 1 && num > -1 && num !=0)
       if (num > 0)
           tmpStr = tmpStr.substring(1,tmpStr.length);
       else
           // Take out the minus sign out (start at 2)
           tmpStr = "-" + tmpStr.substring(2,tmpStr.length);                        


   // See if we need to put parenthesis around the number
   if (bolParens && num < 0)
       tmpStr = "(" + tmpStr.substring(1,tmpStr.length) + ")";


   return tmpStr;

}