jQueryでの選択解除
HTML
<table>
<tr>
<td>
<input type="radio" name="A" value="0" />
<input type="radio" name="B" value="1" />
<input type="radio" name="C" value="2" />
<input type="radio" name="D" value="3" />
td>
tr>
<tr>
<td>
<select>
<option selected="selected" value="AAA">AAAoption>
<option value="BBB">BBBoption>
<option value="CCC">CCCoption>
select>
td>
tr>
<tr>
<td>
<input id="reset" type="submit" value="reset" />
td>
tr>
table>
JavaScript
$('#reset').click(function (event) {
event.preventDefault();
$(':checked').attr('checked', false);
$('select').attr('selectedIndex', 0);
});