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);



});