Login Form Validation Using HTML, CSS, Bootstrap & jQuery
Login Form Validation Using HTML, CSS, Bootstrap & jQuery
Login Form Validation Using HTML, CSS, Bootstrap & jQuery
Almost every modern website requires a secure and user-friendly login form to authenticate users before granting access to protected pages. A well-designed login form not only improves the user experience but also helps prevent invalid data from being submitted. In this project, we create a professional Login Form Validation using HTML, CSS, Bootstrap, and jQuery, allowing users to receive instant feedback whenever they enter incorrect or incomplete information. The clean interface, responsive layout, and real-time validation make this project an excellent example of modern front-end web development.
This project is built using HTML to create the form structure, CSS to enhance the visual appearance, Bootstrap to provide a responsive and mobile-friendly layout, and jQuery to perform client-side form validation. Instead of submitting incomplete or invalid data to the server, users are immediately notified through clear validation messages, creating a faster and more interactive experience. Whether you are a beginner learning form validation or a developer looking for a reusable authentication template, this project provides a solid foundation that can easily be integrated into portfolios, dashboards, admin panels, or business websites.
Login Form Validation:
A Login Form Validation system verifies that users enter valid information before the form is submitted. Client-side validation improves usability by checking required fields, email formats, password length, and other input conditions without refreshing the page. In this project, HTML creates the login form using semantic elements such as <form>, <input>, <label>, and <button>, while CSS styles the interface with a clean and modern design. Bootstrap ensures the form remains fully responsive across desktops, tablets, and smartphones, allowing users to enjoy a consistent experience on every device.
The validation functionality is implemented using jQuery, which listens for form submission events and validates each input field before allowing the form to proceed. If users leave required fields empty or enter invalid information, descriptive error messages are displayed instantly, helping them correct mistakes without unnecessary page reloads. This real-time feedback not only improves user satisfaction but also reduces invalid form submissions and enhances overall usability.
This project is ideal for beginners who want to understand how client-side validation works using jQuery and Bootstrap. It also serves as a practical template for students, freelancers, and professional developers who need a modern login page with responsive design and built-in validation. Since the source code is clean and easy to customize, developers can extend the validation rules, connect the form to a backend authentication system, or modify the design to match any website or web application.
Steps to Create a Login Form Validation System
Follow these simple steps to build a responsive login validation form:
- Create a project folder and name it login-form-validation.
- Create an index.html file to build the login form structure.
- Include Bootstrap to create a responsive layout that works smoothly on all screen sizes.
<!-- TheProviders ----------------- youtube.com/@TheProvidersOfficial -->
<!doctype html>
<html lang="en">
<head>
<title>Login form with validation</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="jquery.js"></script>
</head>
<body class="bg-primary">
<div class="container mt-5 pt-5 d-flex justify-content-center">
<div class="col-md-4 p-4 pb-4 bg-light">
<form>
<h2 class="text-center">Sign In</h2>
<div >
<label class="h5">Email:</label>
<input type="text" class="form-control" id="email">
<span class="text-success float-right mr-2" id="email_status"></span>
</div>
<div >
<label class="h5 mt-4">Password:</label>
<input type="password" class="form-control" id="pass">
<span class="text-success float-right mr-2" id="pass_status"></span>
<br>
<a href="#" class="my-3 float-right mr-0">Forget Password ?</a>
</div>
<button class="btn btn-primary btn-block">LOGIN</button>
</form>
</div>
</div>
</body>
</html>
Include the jQuery library to implement client-side validation functionality. Build the form using semantic HTML elements such as <form>, <input>, <label>, <button>, and <div>. Use jQuery methods such as val(), submit(), preventDefault(), trim(), text(), and addClass() to validate user input and display error messages instantly. Test the login form on different devices to ensure responsive design, accurate validation, and a smooth user experience.
<script>
// put validations using jquery
$(document).ready(function(){
$("#email").keyup(function(){
var regx_email = /^([a-zA-Z]+)([0-9]+)?(@)([a-zA-Z]{5,10}(.)([a-zA-Z]+))$/i;
var email_inp = $(this).val();
if (regx_email.test(email_inp)) {
$("#email_status").text("valid");
$("#email_status").removeClass("text-danger");
}
else {
$("#email_status").addClass("text-danger");
$("#email_status").text("Invalid");
}
});
$("#pass").keyup(function(){
var regx_pass = /^([a-zA-Z]+)([0-9]+)([$&+,:;=?@#|'<>.^*()%!-]+)$/i ;
var pass = $(this).val();
if (regx_pass.test(pass)) {
$("#pass_status").text("valid");
$("#pass_status").removeClass("text-danger");
}
else {
$("#pass_status").text("Invalid");
$("#pass_status").addClass("text-danger");
}
});
});
</script>
