radio实现第一次点击选中第二次点击取消

Jquery代码如下：

$("#add_form .radio input").bind("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);





});