function loanResults() {
let amount = document.getElementById("amountLoan").value;
let months = document.getElementById("monthsLoan").value;
let interest = document.getElementById("rateLoan").value;
//Calculate and converts to decimal
let principal = parseFloat(amount);
let calculateInterest = parseFloat(interest) / 100 / 12;
let calculatePayments = parseFloat(months)
//Compute monthly Payment
let x = Math.pow(1 + calculateInterest, calculatePayments);
let monthly = (principal * x * calculateInterest) / (x - 1);
let monthlyPayment = monthly.toFixed(2);
//Compute Interest
let totalInterest = (monthly * calculatePayments - principal).toFixed(2);
//Compute Total Payment
let totalPayment = (monthly * calculatePayments).toFixed(2);
//Compute Principal Payment
let prinPayment = (totalPayment - monthlyPayment).toFixed(2);
//Show Summary Results
document.getElementById("mPayments").innerHTML = "$" + monthlyPayment;
document.getElementById("iRPayments").innerHTML = "$" + totalInterest;
document.getElementById("Payments").innerHTML = "$" + totalPayment;
document.getElementById("princialPayment").innerHTML = "$" + prinPayment;
//New array created
let intRate = 0;
let loanBalance = totalPayment;
let newPrincipal = principal;
let newInterestAmount = 0;
//Iterates and stores the array
let array = new Array();
for (let i = 0; i < months && totalPayment > 0; i++) {
newInterestAmount = calculateInterest * newPrincipal;
newPrincipal = newPrincipal - (monthlyPayment - newInterestAmount);
loanBalance -= monthly;
intRate += newInterestAmount;
array[i] = new Array();
array[i][0] = (i + 1).toFixed(0);//Months
array[i][1] = parseFloat(monthly).toFixed(2);//Monthly payment
array[i][2] = i == months - 1 ? 0.00 : newPrincipal.toFixed(2);//Principal balance
array[i][3] = i == months - 1 ? 0.00 : newInterestAmount.toFixed(2);//Interest
array[i][4] = parseFloat(intRate).toFixed(2);//Accrued interest
array[i][5] = i == months - 1 ? 0.00 : parseFloat(loanBalance).toFixed(2);//Total balance
}
//Table
let table = document.getElementById("results").getElementsByTagName("tbody")[0];
for (let j = 0; table.rows.length > 0; j++) {
table.deleteRow(-1);//Deletes the last row in the table
}
//Outputs table to HTML
for (let i = 0; i < months; i++) {
let row = table.insertRow();
var loanTable = `| ${(array[i][0])} | ${(array[i][1])} | ${(array[i][2])} |
${(array[i][3])} | ${(array[i][4])} | ${(array[i][5])} | `;
row.innerHTML = loanTable;
}
return;
}
//Clear button function
function reset() {
document.getElementById("amountLoan").value = "";
document.getElementById("monthsLoan").value = "";
document.getElementById("rateLoan").value = "";
document.getElementById("mPayments").value = "";
document.getElementById("princialPayment").value = "";
document.getElementById("iRPayments").value = "";
document.getElementById("Payments").value = "";
}