({
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mortgageChange : function(component, event) {
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var principal = event.getParam("principal");
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var years = event.getParam("years");
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var rate = event.getParam("rate");
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var monthlyPayment = event.getParam("monthlyPayment");
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var monthlyRate = rate / 100 / 12;
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var balance = principal;
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var amortization = [];
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for (var y=0; y<years; y=y+1) {
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var interestY = 0; //Interest payment for year y
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var principalY = 0; //Principal payment for year y
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for (var m=0; m<12; m=m+1) {
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var interestM = balance * monthlyRate; //Interest payment for month m
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var principalM = monthlyPayment - interestM; //Principal payment for month m
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interestY = interestY + interestM;
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principalY = principalY + principalM;
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balance = balance - principalM;
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}
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amortization.push({principalY: Math.round(principalY), interestY: Math.round(interestY), balance: Math.round(balance)});
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}
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component.set("v.amortization", amortization);
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}
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})
|
