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Tutorials » Actionscripting

Creating a mortgage calculator in Flash MX
Author: Sas Jacobs | Website: http://www.sasjacobs.com |

Calculations

The actionscript goes on frame 2 of the actions layer .It calcuates the mortage repayment. I don't want to confuse matters with explaining how the mortgage calculations work. I'm not sure that I understand it myself!!

//calculate interest rate applicable to period

var periodicInterestRate = floInterest/intRepayments/100;



//length in periods

var TotPeriods = intTerm * intRepayments;



//periodic interest

var PeriodicInterest = intPrincipal * periodicInterestRate;

var base = 1;

var mbase = 1 + periodicInterestRate;

for (var i=0; i 
 base = base * mbase;

}



//calculate Total Repayment

TotRepayment = floor(intPrincipal * periodicInterestRate / ( 1 - (1/base)));

Test the movie. Enter some figures and test the calculation.

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