Bpi Home Loan Calculator

let loanSteps = “”; const currencySymbol = “₱”, fixedCurrency = “PHP”; function calculateLoan(){ loanSteps=””; const loanAmount = parseFloat(document.getElementById(“loanAmount”).value); const interestRate = parseFloat(document.getElementById(“interestRate”).value) / 100; const loanTerm = parseInt(document.getElementById(“loanTerm”).value); if(isNaN(loanAmount) || isNaN(interestRate) || isNaN(loanTerm) || loanAmount <= 0 || interestRate <= 0 || loanTerm <= 0){ alert("Please enter valid positive values for all fields."); return; } const monthlyInterest = interestRate / 12; const numberOfPayments = loanTerm * 12; const monthlyPayment = loanAmount * monthlyInterest / (1 – Math.pow(1 + monthlyInterest, -numberOfPayments)); document.getElementById("monthlyPayment").value = formatCurrency(monthlyPayment); loanSteps += `Inputs:
Loan Amount: ${formatCurrency(loanAmount)}
Interest Rate: ${(interestRate * 100).toFixed(2)}%
Loan Term: ${loanTerm} years

`; loanSteps += `Formula:
Monthly Payment = Loan Amount × (Monthly Interest Rate) ÷ (1 – (1 + Monthly Interest Rate)^{-Number of Payments})

`; loanSteps += `Result:
Monthly Payment: ${formatCurrency(monthlyPayment)}
`; loanSteps += `Tip: Consider the impact of interest rates and loan term when planning your loan repayment.`; if(document.getElementById(“calculationStepsLoan”).style.display === “block”){ document.getElementById(“calculationStepsLoan”).innerHTML = loanSteps; } } function resetLoan(){ document.querySelectorAll(“#bpi_home_loan_calculator input”).forEach(el => el.value = “”); loanSteps = “”; document.getElementById(“calculationStepsLoan”).innerHTML = “

Not calculated yet.

“; } function toggleLoanSteps(){ const s = document.getElementById(“calculationStepsLoan”); const a = document.getElementById(“toggleArrowLoan”); if(s.style.display === “none” || s.style.display === “”){ s.style.display = “block”; a.style.transform = “rotate(180deg)”; s.innerHTML = loanSteps || “

Not calculated yet.

“; } else { s.style.display = “none”; a.style.transform = “rotate(0deg)”; } } function formatCurrency(n) { return currencySymbol + n.toFixed(2) + ” ” + fixedCurrency; }