javascript – 第二次单击时取消选中单选按钮

Varun Malhotra的答案略有修改：
我改变了2行代码,对我来说效果更好.但总的来说,Varun的答案是完美的！

$('input[type="radio"]').click(function(){
    var $radio = $(this);

    // if this was previously checked
    if ($radio.data('waschecked') == true)
    {
        $radio.prop('checked',false);
        $radio.data('waschecked',false);
    }
    else
    {
         $radio.prop('checked',true);
         $radio.data('waschecked',true);
    }

    // remove was checked from other radios
    $radio.siblings('input[type="radio"]').data('waschecked',false);
});

$(function(){
    $('input[name="rad"]').click(function(){
        var $radio = $(this);

        // if this was previously checked
        if ($radio.data('waschecked') == true)
        {
            $radio.prop('checked',false);
            $radio.data('waschecked',false);
        }
        else
            $radio.data('waschecked',true);

        // remove was checked from other radios
        $radio.siblings('input[name="rad"]').data('waschecked',false);
    });
});

您还需要将此属性添加到最初检查的无线电标记中

 $(function(){
        $('input[name="rad"]').click(function(){
            var $radio = $(this);

            // if this was previously checked
            if ($radio.data('waschecked') == true)
            {
                $radio.prop('checked',false);
                $radio.data('waschecked',false);
            }
            else
                $radio.data('waschecked',true);

            // remove was checked from other radios
            $radio.siblings('input[type="radio"]').data('waschecked',false);
        });
    });