how to use ajax in the script and call the controller

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hi I'm working i web application,
I want to run function without page reloading and need to call function as AJAX.

i using two dropdown box, my requirement is, the second dropdown box should display a set of values from database is based on the selection from the first dropdown box.


<select name="taProj" id="taProj" onchange= "checkField(this.value)">
                     <option value="" >-------------------------</option>
                     <?php   foreach ($tap as $row){?>               
                     <option value="<?php echo $row['proj_id']; ?>" ><?php echo $row['proj_name'];?></option>
                     <?php } ?>
                  </select>


script code:
<script type="text/javascript">
   function checkField(val){
alert(val);
}
</script>


how to call my controller from onchange event of the select and then load the my another dropdownlist
please give the suggestion ..

thanks
Kumar

 
JohntheFish replied on at Permalink Reply
JohntheFish
shankumars replied on at Permalink Reply
thanks John ... but i want solution without add any addon,,, is it possible?
JohntheFish replied on at Permalink Reply
JohntheFish
The addon is not a solution.

It is examples of how ajax works in c5 that you can use to learn how to put together your own solution. Hence 'lessons'.