using Change on an Input and then modifying the input's ATTR?
<p>Given:</p>

<p><strong>html</strong></p>

<pre><code>&lt;input checked="checked" class="list_completed_checkbox" id="list_item_completed" name="list_item[completed]" type="checkbox" value="1"&gt;
</code></pre>

<p><strong>jQuery:</strong></p>

<pre><code>$('.list_completed_checkbox').change(function() {
    $(this).attr('disabled', 'disabled');
});
</code></pre>

<p>When you check or uncheck the checkbox, Why isn't the disabled attr being applied to the input?</p>

<p>Thanks</p>
