How do I add & remove values from a hidden input field?
<pre><code>&lt;input type="hidden" id="values" value="1,2,1,3" /&gt;

&lt;a href="#" id="add" data-value="4"&gt;add&lt;/a&gt;

&lt;a href="#" id="remove" data-value="1"&gt;remove&lt;/a&gt;

&lt;script type="text/javascript"&gt;
$(document).ready(function()
{
    $('#add').click(function()
    {
        var value = $(this).attr('data-value');

        //add to $('#values')

        return false;
    });

    $('#remove').click(function()
    {
        var value = $(this).attr('data-value');

        //remove all values that match in $('#values');

        return false;
    });
});
&lt;/script&gt;
</code></pre>

<p><strong>Examples</strong></p>

<p>a) Add, output would be: 1,2,1,3,4</p>

<p>b) Remove, output would be 2,3</p>
