Hey, I am Ajink, and today in this blog, we’re going to build a form with basic validation using HTML, CSS, and JavaScript. Adding validation to your forms is crucial to ensure that users enter the correct information.
HTML Code: create index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="style.css">
<title>Form with Basic Validation</title>
</head>
<body>
<div class="form-container">
<form id="myForm">
<label for="name">Name:</label>
<input type="text" id="name" name="name" required>
<label for="email">Email:</label>
<input type="email" id="email" name="email" required>
<button type="button" onclick="validateForm()">Submit</button>
</form>
</div>
<script defer src="script.js"></script>
</body>
</html>
HTML Code Explanation:
- We have a basic HTML structure with a form containing input fields for the name and email. The
requiredattribute is used for basic empty field validation.
CSS Code: create a style.css
body {
margin: 0;
font-family: 'Arial', sans-serif;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
background-color: #f0f0f0;
}
.form-container {
background-color: #fff;
padding: 20px;
border-radius: 5px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
label {
display: block;
margin-bottom: 8px;
}
input {
width: 100%;
padding: 8px;
margin-bottom: 16px;
}
button {
background-color: #3498db;
color: #fff;
padding: 10px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
}
CSS Code Explanation:
- The CSS provides styling for the form, including spacing, input field styles, and button styles.
JavaScript Code: create script.js
function validateForm() {
const nameInput = document.getElementById('name');
const emailInput = document.getElementById('email');
if (nameInput.value.trim() === '') {
alert('Name cannot be empty');
return;
}
if (!isValidEmail(emailInput.value)) {
alert('Please enter a valid email address');
return;
}
// Form is valid, you can submit the data or perform further actions
alert('Form submitted successfully!');
}
function isValidEmail(email) {
// Basic email validation using regex
const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
return emailRegex.test(email);
}
JavaScript Code Explanation:
- The JavaScript code provides the form validation logic.
- The
validateFormfunction is called when the submit button is clicked. - It checks for empty fields and validates the email format using a regular expression.
Conclusion:
In this blog, we successfully built a form with basic validation using HTML, CSS, and JavaScript. You can expand on this example by adding more complex validation or integrating with server-side validation. Don’t forget to subscribe to my YouTube channel at youtube.com/@ajink21 for more exciting tutorials.
Thanks for reading, and if you have any doubts, feel free to comment!
