添加选中的单选按钮总数

If you try the form on this link http://jsfiddle.net/Matt_KP/BwmzQ/ the fiddle and select the top right £40 radio button then see the order total at the bottom it says £40. Then if you select the £75 the order total changes to £75 but then if you go back and check the £40 again the order total is £75 + £40 when it should just be £40 for the radio button that is checked.

更新结束

我有一个单选按钮部分，如果选择了其他单选按钮，则只能检查某些单选按钮.因此，假设用户选择了一个单选按钮，但随后又选择了另一个单选按钮，则第一个单选按钮将变为未选中状态，因为他们不能同时选择这两个按钮.

<script type="text/javascript">
jQuery(document).ready(function($){
$('input:radio').change(function(){
var total = 0.0;
$('input:radio:checked').each(function(){
      total += parseFloat($(this).data('price'));
});
$('#total').val(total.toFixed(2));
});

})
</script>