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    <p>EDIT: here is a solution that works quite well for the task, adapting the lines of Tvanfosson:</p> <pre><code>&lt;script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"&gt; &lt;/script&gt; &lt;script&gt; $(function() { $('#country').change( function() { var val = $(this).val(); if (val == 223 || val == 224) { $('#othstate').val('').hide(); $.ajax({ url: 'findState.php', dataType: 'html', data: { country : val }, success: function(data) { $('#state').html( data ); } }); } else { $('#state').val('').hide(); $('#othstate').show(); } }); }); &lt;/script&gt; &lt;select style="background-color: #ffffa0" name="country" id=country &gt; &lt;option&gt;Select Country&lt;/option&gt; &lt;option value="223"&gt;USA&lt;/option&gt; &lt;option value="224"&gt;Canada&lt;/option&gt; &lt;option value="225"&gt;England&lt;/option&gt; &lt;option value="226"&gt;Ireland&lt;/option&gt; &lt;/select&gt; &lt;select style="background-color: #ffffa0" name="state"&gt; &lt;option&gt;Select Country First&lt;/option&gt; &lt;/select&gt; &lt;input type="text" name="othstate" id=othstate value="" class="textBox" style="display: none;"&gt; </code></pre> <p>As you can see, I eliminated the <code>&lt;form&gt;</code> element which is not absolutely necessary but can be added (and then has to be used properly in case JS is deactivated at the users end. See <a href="https://stackoverflow.com/questions/2704753/is-form-tag-necessary-in-ajax-web-application"> here</a>.</p> <p>I also eliminated the <code>onchange</code> event which is being replaced by the 'change()` jquery function.</p>
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    1. POHow to use AJAX to populate state list depending on Country list?
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