let loanSteps = “”; const currencySymbol = “$”, fixedCurrency = “USD”; function calculateLoan(){ loanSteps=””; const loanAmount=parseFloat(document.getElementById(“loanAmount”).value); const interestRate=parseFloat(document.getElementById(“interestRate”).value)/100; const loanTerm=parseFloat(document.getElementById(“loanTerm”).value); if(isNaN(loanAmount)||isNaN(interestRate)||isNaN(loanTerm)||loanAmount<=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)); const totalLoanCost = monthlyPayment * numberOfPayments; document.getElementById("monthlyPayment").value = formatCurrency(monthlyPayment); document.getElementById("totalLoanCost").value = formatCurrency(totalLoanCost); loanSteps += `Inputs:
Loan Amount: ${formatCurrency(loanAmount)}
Interest Rate: ${(interestRate * 100).toFixed(2)}%
Loan Term: ${loanTerm} years

`; loanSteps += `Formulas:
Monthly Payment = Loan Amount × Monthly Interest Rate / (1 – (1 + Monthly Interest Rate)^-Number of Payments)
Total Loan Cost = Monthly Payment × Number of Payments

`; loanSteps += `Results:
Monthly Payment: ${formatCurrency(monthlyPayment)}
Total Loan Cost: ${formatCurrency(totalLoanCost)}
`; if(document.getElementById(“calculationStepsLoan”).style.display===”block”){ document.getElementById(“calculationStepsLoan”).innerHTML = loanSteps; } } function resetLoan(){ document.querySelectorAll(“#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;}