let loanPaymentSteps = “”; const currencySymbol = “$”, fixedCurrency = “USD”; function calculateLoanPayment(){ loanPaymentSteps=””; const loanAmount = parseFloat(document.getElementById(“loanAmount”).value); const interestRate = parseFloat(document.getElementById(“interestRate”).value); const loanTerm = parseFloat(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 monthlyRate = interestRate / 100 / 12; const termMonths = loanTerm * 12; const monthlyPayment = (loanAmount * monthlyRate) / (1 – Math.pow(1 + monthlyRate, -termMonths)); document.getElementById("monthlyPayment").value = formatCurrency(monthlyPayment); loanPaymentSteps += `Inputs:
Loan Amount: ${formatCurrency(loanAmount)}
Interest Rate: ${interestRate}%
Loan Term: ${loanTerm} years

`; loanPaymentSteps += `Formula:
Monthly Payment = PMT(interest rate/12, term in months, loan amount)

`; loanPaymentSteps += `Result:
Monthly Payment: ${formatCurrency(monthlyPayment)}
`; if (document.getElementById(“calculationStepsLoanPayment”).style.display === “block”) { document.getElementById(“calculationStepsLoanPayment”).innerHTML = loanPaymentSteps; } } function resetLoanPayment(){ document.querySelectorAll(“#calculator input”).forEach(el => el.value = “”); loanPaymentSteps = “”; document.getElementById(“calculationStepsLoanPayment”).innerHTML = “

Not calculated yet.

“; } function toggleLoanPaymentSteps(){ const s = document.getElementById(“calculationStepsLoanPayment”); const a = document.getElementById(“toggleArrowLoanPayment”); if (s.style.display === “none” || s.style.display === “”){ s.style.display = “block”; a.style.transform = “rotate(180deg)”; s.innerHTML = loanPaymentSteps || “

Not calculated yet.

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