Charles Sipe's Portfolio
Loan Payment Calculator Using JavaScript
Loan Amount: $
Interest Rate:
Months:
Code by Adam Khoury
HTML code:
<p>Loan Amount: $<input id="amount" type="number" min="1" max="1000000" onchange="computeLoan()"></p> <p>Interest Rate: <input id="interest_rate" type="number" min="0" max="100" value="10" step=".1" onchange="computeLoan()"></p> <p>Months: <input id="months" type="number" min="1" max="72" value="1" step="1" onchange="computeLoan()"></p> <h2 id="payment"></h2>
JavaScript code:
function computeLoan(){ var amount = document.getElementById('amount').value; var interest_rate = document.getElementById('interest_rate').value; var months = document.getElementById('months').value; var interest = (amount * (interest_rate * .01)) / months; var payment = ((amount / months) + interest).toFixed(2); payment = payment.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ","); document.getElementById('payment').innerHTML = "Monthly Payment = $"+payment; }
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