Adding a CAPTCHA Refresh Button in CodeIgniter Login Page

In an increasingly digitized world, web security is of paramount importance. CAPTCHAs serve as an effective defense against automated bots and malicious attacks, but they can sometimes be a source of user frustration due to their complexity. To strike a balance between security and user experience, this article will guide you through the process of implementing a CAPTCHA refresh button in a CodeIgniter-based login page. Users can now obtain a new CAPTCHA without reloading the entire page.

Step 1: Setting Up the CodeIgniter Environment

Ensure you have a working CodeIgniter environment. If you haven’t already, download and install CodeIgniter, and create a new controller for your login page (e.g., LoginController).

Step 2: Integrating CAPTCHA

In your CodeIgniter view file for the login page (login_view.php), add the following code to integrate CAPTCHA into your form:

<form class="form-signin" action="<?php echo site_url('LoginController/login/'); ?>" method="POST">

<!-- Other form fields here -->

<div class="form-label-group">

<!-- Existing form fields --> <!-- CAPTCHA image -->

<img src="<?php echo site_url('LoginController/captcha'); ?>" id="captcha_image" style="height:22px;">

<!-- CAPTCHA refresh button -->

<a id="refresh-captcha" style="cursor: pointer;" onclick="refreshCaptcha();">

<i class="fa fa-refresh" aria-hidden="true"></i> </a>

<!-- Input field for CAPTCHA text -->

<input type="text" id="captcha" name="captcha" placeholder="Security Code" required> </div>

<!-- Other form elements and submission button -->

</form>

Step 3: JavaScript for CAPTCHA Refresh

In your view file, add JavaScript to handle the CAPTCHA refresh button’s click event. You can include it within a <script> tag:

<script>

function refreshCaptcha()

{

// Get the current timestamp to make the CAPTCHA URL unique and force a refresh

var timestamp = new Date().getTime(); // Update the CAPTCHA image source with the new timestamp document.getElementById("captcha_image").src = "<?php echo site_url('LoginController/captcha'); ?>?" + timestamp; }

</script>

Conclusion

With these steps, you’ve successfully added a CAPTCHA refresh button to your CodeIgniter-based login page. Users can now refresh the CAPTCHA without having to reload the entire page, offering a smoother and more secure login experience.

In conclusion, this implementation strikes a balance between security and user convenience, enhancing the overall user experience while safeguarding your web application from automated attacks.

If you want to know how to Implementing Captcha for a Login Page in CodeIgniter, you can read this article https://dgihost.com/index.php/2023/10/17/implementing-captcha-for-a-login-page-in-codeigniter/

In an increasingly digitized world, web security is of paramount importance. CAPTCHAs serve as an effective defense against automated bots and malicious attacks, but they can sometimes be a source of user frustration due to their complexity. To strike a balance between security and user experience, this article will guide you through the process of…