php - How to call AJAX request on dropdown change event?

Question

index.php

<script type="text/javascript" src="jquery-1.4.2.js"></script>
<script type="text/javascript" src="ajax.js"></script>

<a href='one.php' class='ajax'>One</a>
<a href='two.php' class='ajax'>Two</a>

<div id="workspace">workspace</div>

one.php

$arr = array ( "workspace" => "One" );
echo json_encode( $arr );

two.php

$arr = array( 'workspace' => "Two" );
echo json_encode( $arr );

ajax.js

jQuery(document).ready(function(){
    jQuery('.ajax').live('click', function(event) {
        event.preventDefault();
        // load the href attribute of the link that was clicked
        jQuery.getJSON(this.href, function(snippets) {
            for(var id in snippets) {
                // updated to deal with any type of HTML
                jQuery('#' + id).html(snippets[id]);
            }
        });
    });
});

Above code is working perfectly. When I click link 'One' then String 'One' is loaded into workspace DIV and when I click link 'Two' then String 'Two' is loaded into workspace DIV.

Question:

Now I want to use a dropdown to load one.php and two.php in workspace DIV instead of links in index.php. When I use link then I use class='ajax' in link properties but how to call ajax request on drop down change event ?

Thanks

Answer 1

Change your code like this:

jQuery('#dropdown_id').live('change', function(event) {
    jQuery.getJSON($(this).val(), function(snippets) {
        for(var id in snippets) {
            // updated to deal with any type of HTML
            jQuery('#' + id).html(snippets[id]);
        }
    });
});

And your dropdown should look like this:

<select id="dropdown_id">
  <option value="one.php">One</option>
  <option value="two.php">Two</option>
</select>