<!DOCTYPE html>
<html>
<head>
    <title>Password Strength Validation Example</title>
    <style>
        .error {
            color: red;
        }
    </style>
</head>
<body>

    <h2>Password Strength Validation Example</h2>
    
    <form id="passwordForm" onsubmit="return validatePassword()">
        <label for="password">Password:</label>
        <input type="password" id="password" name="password">
        <span id="passwordError" class="error"></span>

        <br>

        <input type="submit" value="Submit">
    </form>

    <script src="zxcvbn.js"></script>
    <script>
        function validatePassword() {
            var passwordInput = document.getElementById('password');
            var password = passwordInput.value;
            var passwordError = document.getElementById('passwordError');
            
            // Reset error message
            passwordError.innerHTML = "";

            // Password Strength Check using zxcvbn
            var result = zxcvbn(password);

            // Display password strength feedback to the user
            if (result.score < 3) {
                passwordError.innerHTML = "Choose a stronger password";
                return false;
            }

            // Form is valid
            alert("Password submitted successfully!");
            return true;
        }
    </script>

</body>
</html>
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