Refresh Simple Captcha

Question

I am using simple captcha in my JSP. Everything is OK. I want to provide a refresh button alongside of captcha to allow user to change the captcha. Captcha changes only on refreshing the complete page but I don't want to reload whole page for it.

I need your suggestions on how I can implement this like using AJAX or JQuery to reload only the captcha, not whole page.

score 3 · Accepted Answer · edited Jun 25 '12 at 17:47

3

<script type="text/javascript">
    function reloadCaptcha(){
        var d = new Date();
        $("#captcha_image").attr("src", "/captcha_generator.jsp?"+d.getTime());
    }
</script>
   ...
<img id="captcha_image" src="/captcha_generator.jsp" alt="captcha image" width="200" height="50"/>
<img src="reload.jpg" onclick="reloadCaptcha()" alt="reload"width="40" height="40"/>

edited Jun 25 '12 at 17:47

sachleen

30,730
8
78
73

answered Jun 25 '12 at 11:29

javaghost

46
3

reload image is not able to click.. can you suggest me plz ? – Manoj Kumar Jan 01 '14 at 16:28

score 0 · Answer 2 · answered Apr 14 '12 at 08:38

I don't remember how SimpleCaptcha works, but usually, you should simply change the 'src' attribute of you captcha <img>. Something like this on the onClick of your refresh button:

var img = document.getElementById('captcha_id');// captcha_id is the id attribute of your caprtcha img
img.src = 'Some new captcha url';

score 0 · Answer 3 · answered Apr 21 '13 at 04:42

<script type="text/javascript">
    function reloadCaptcha(){
        var d = new Date();
        $("#captcha_image").attr("src", "captcha.php?"+d.getTime());
    } </script>

<img id="captcha_image" src="captcha.php" alt="captcha image" width="90" height="33"/> <img src="images/refresh.png" alt="reload" width="22" height="22" border="0" onclick="reloadCaptcha()" />

Refresh Simple Captcha

3 Answers3

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