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    copied!<p>I highly recommend you to use jQuery. Lets assume this is your HTML.</p> <pre><code> &lt;select class="item_1"&gt; &lt;option value="0"&gt;Choose&lt;/option&gt; &lt;option value="1"&gt;Option 1&lt;/option&gt; &lt;option value="2"&gt;Option 2&lt;/option&gt; &lt;option value="3"&gt;Option 3&lt;/option&gt; &lt;/select&gt; &lt;select class="item_2"&gt; &lt;option value="0"&gt;Choose&lt;/option&gt; &lt;option value="1"&gt;Option 1&lt;/option&gt; &lt;option value="2"&gt;Option 2&lt;/option&gt; &lt;option value="3"&gt;Option 3&lt;/option&gt; &lt;/select&gt; </code></pre> <p><strong>A:</strong></p> <pre><code>$(document).ready(function() { // Handler for first select box $('.item_1').change(function() { alert('Handler for item_1 called.'); }); // Handler for second select box $('.item_2').change(function() { alert('Handler for item_2 called.'); }); }); </code></pre> <p><strong>B</strong> Yes you should use PHP or any other server side language. But I have a little suggestion / question?</p> <blockquote> <p>Depending on the returned values, we will get image_path value from database so instead of printing 2.jpg, it may print my_cute_dog.jpg.</p> </blockquote> <p>You didn't need to call another php file to get image path, just write all in PHP and return JSON encoded data to javascript. For this case I recommend you to add extra button, however this is optional. Lets write some code add this inside document.ready()</p> <pre><code>$('#get_data').bind('click', function() { // get current values from select boxes. var item_1 = $(".item_1").val(); var item_2 = $(".item_2").val(); //Sending AJAX POST Request. $.post("example.php", { name: "value", name_2: "value_2" }, function(data) { alert(data); // print data | you can use this data. }); }); </code></pre>
 

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