Auto Loan Calculator Ph

let autoLoanSteps = “”; const currencySymbol = “₱”, fixedCurrency = “PHP”; function calculateAutoLoan(){ autoLoanSteps=””; 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 monthlyInterestRate = interestRate / 12; const monthlyPayment = (loanAmount * monthlyInterestRate) / (1 – Math.pow(1 + monthlyInterestRate, -loanTerm)); document.getElementById("monthlyPayment").value = formatCurrency(monthlyPayment); autoLoanSteps += `Inputs:
Loan Amount: ${formatCurrency(loanAmount)}
Interest Rate: ${(interestRate * 100).toFixed(1)}%
Loan Term: ${loanTerm} months

`; autoLoanSteps += `Formula:
Monthly Payment = Loan Amount × Monthly Interest Rate / (1 – (1 + Monthly Interest Rate)^(-Loan Term))

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

Not calculated yet.

“; } function toggleAutoLoanSteps(){ const steps = document.getElementById(“calculationStepsAutoLoan”); const arrow = document.getElementById(“toggleArrowAutoLoan”); if(steps.style.display === “none” || steps.style.display === “”){ steps.style.display = “block”; arrow.style.transform = “rotate(180deg)”; steps.innerHTML = autoLoanSteps || “

Not calculated yet.

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