Math.round() - Currency and date issues for mortgage app.

[jbum]

Good morning

Here's some sample code for working out a payment schedule.

code:

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// Utility function to determine if leap year

isLeapYear = function(year)

{

     return (   year % 4 == 0 &&

             (year % 100 != 0 || year % 400 == 0) );

             

}



// Utility function to determine number of days in month

// (including leap years)

kmDays = [31, 28, 31, 30, 31, 30,

         31, 31, 30, 31, 30, 31];

getMonthDays = function(year,mNbr) // month is from 0 - 11

{

  return kmDays[mNbr] + (mNbr == 1 && isLeapYear(year));

}



// Sample Usage

// print end of month for next 52 pay periods



var dat = new Date();

yr = dat.getFullYear(); // get current year

mn = dat.getMonth();    // get current month (0-11)



// loop over number of pay periods

for (var i = 0; i < 52; ++i)

{

  var dat = new Date(yr,mn,getMonthDays(yr,mn));

  var datString = dat.getFullYear() + '.' + (dat.getMonth()+1) + '.' + dat.getDate();



  trace(i + ": " + datString);



  // increment month - if we reach end o f year, reset month and increment year

  if (++mn >= 12) {

		mn = 0;

		yr++;

	}

}

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