Login Form

Part of the JavaScript in Action section of Coddy's HTML journey — lesson 25 of 27.

Challenge

Easy

Create a Login Form that validates credentials.

We have a login form with username and password fields. The username is pre-filled as "admin". Your job is to validate the password when the login button is clicked.

Steps:

In JavaScript:
- Create variables for the password input, login button, and message element
- Add a click event listener to the login button
When the login button is clicked:
- Check if the password equals "admin123"
- If correct, show: "Logged in successfully!" and set the message class to "success"
- If incorrect, show: "Invalid password" and set the message class to "error"

Try it yourself

<!DOCTYPE html>
<html>
<head>
    <title>Login Form</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="login-container">
        <h2>Login</h2>
        <form id="loginForm">
            <div class="form-group">
                <label for="username">Username:</label>
                <input type="text" id="username" value="admin" readonly>
            </div>
            <div class="form-group">
                <label for="password">Password:</label>
                <input type="password" id="password" placeholder="Enter password">
            </div>
            <button type="button" id="loginBtn">Login</button>
            <p id="loginMsg"></p>
        </form>
    </div>
    <script src="script.js"></script>
</body>
</html>