Best matchRelated: input valuesIntermediate
Currency Converter
Read form values and use them in the project logic.
Build a currency converter →Loan Calculator
Build a loan calculator with HTML, CSS, and JavaScript while practicing DOM selection and DOM content updates.
Beginner20–30 minutesHTML5CSS3JavaScript
You’ll practice
DOM SelectionDOM Content UpdatesReading Input Values
01 — What you’ll build
Loan Calculator
Build a loan calculator using HTML, CSS, and JavaScript, then connect the interface to the logic that makes it work. You’ll learn how to take user input, perform a calculation, and display a clear result while getting hands-on practice with DOM selection, DOM content updates, and input values.
02 — Included
- Click-based interactions
- Loan Calculator interface
- Responsive HTML and CSS layout
- Complete source code and live demo
03 — You’ll practice
- Select HTML elements from the DOM
- Update content on the page
- Read and update form values
- Format numbers with toFixed
- Perform calculations with JavaScript
Recommended knowledge: Basic HTML and CSS, JavaScript variables and number operations, DOM selection and form events.
Complete project files
Build It from the Source Code
This project runs directly in the browser with HTML, CSS, and JavaScript.
- 1Create 3 files
- 2Copy the code
- 3Run
index.html
Before you run it
- Keep all project files together in the same folder.
Project structure
loan-calculator/
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Loan Calculator</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="container">
<h1>Loan Calculator</h1>
<p>Loan Amount $
<input onchange="calculateLoan()" class="input" type="number" id="loan-amount" min="1" max="500000" value="10000">
</p>
<p>Interest Rate %
<input onchange="calculateLoan()" class="input" type="number" id="interest-rate" min="0" max="100" value="10" step=".1">
</p>
<p>Months to pay
<input onchange="calculateLoan()" class="input" type="number" id="months-to-pay" min="6" max="48" value="12">
</p>
<p class="payment" id="payment">Monthly Payment:</p>
</div>
<script src="index.js"></script>
</body>
</html>
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