jQuery检查Checkbox是否已选中,然后将值添加到输入字段

Question

我有一个购物车结帐页面,我正在尝试添加"礼物"选项.需要做什么:选择"将订单作为礼品发送"复选框后,需要将值分配给隐藏的输入字段,以便将信息移动到确认页面和各种收据上.

HTML:

<h3>Send Order As Gift</h3>
<ul>
    <li class="fc_row fc_gift"><label for="gift" class="fc_pre">This is a gift, 
    please do not include a receipt.</label>
    <input type="checkbox" name="gift" id="gift" class="checkbox" value="" />
    <input type="hidden" name="Gift" id="gift-true" value="" /></li>
    <script type="text/javascript">
    $(document).ready(function(){
        $("#gift-true").input( $('#edit-checkbox-id').is(':checked').val() + "Yes"); 
    });?                
    </script>
    </li>
    <li class="fc_row fc_gift_message"><label for="Gift Message">Include a message 
    (limit 100 characters):</label>
    <textarea name="Gift Message" cols="50" rows="3" maxlength="100"></textarea>
    </li>
</ul>

Answer 1

每当更改复选框时,您都必须更新隐藏字段:

$(function(){
    $('#gift').change(function() {
        $("#gift-true").val(($(this).is(':checked')) ? "yes" : "no");
    });
});