Amortization Schedule Example JavaScript

AmortizationSchedule.js

/**
 * Created by praneeth on 8/27/2016.
 */

var capital = 100000;
var period = 12;
var rate = 12;

var r =  parseFloat(rate) / (100 * period) ;
// console.log(r);

var instalment = ((capital * r) / (1 - (1 / Math.pow((1 + r),period))));

// var output_width = 70;

/*console.info("\nCapital\t\t\t" + capital);
console.info("Interest\t\t"+rate);
console.info("Period\t\t", period);
console.info("Installment\t\t", instalment);*/

var total_interest = 0;
var total_recoverable = 0;

var running_bal = capital;
interest = parseFloat(running_bal) * r;



for (var i = 1; i <= period ; i++) {
    var interest = parseFloat(running_bal) * r;
    running_bal -= (instalment - interest);
    console.error(i + "\t\t" + instalment.toFixed(2) + " \t\t" + interest.toFixed(2) + "\t\t" + (instalment - interest).toFixed(2) + "\t\t" + running_bal.toFixed(2));
    total_recoverable += instalment;
    total_interest += interest;
}

console.info("Total \t" + total_recoverable.toFixed(2) + " \t\t" + total_interest.toFixed(2) + "\t\t" + (capital).toFixed(2));