试试这个，这个会有效果的:

        $(document).ready(function() {
           $("input[type='radio']").mousedown(function(e) {
                if ($(this).attr("checked") == true) {
                   setTimeout("$('input[id=" + $(this).attr('id') + "]').removeAttr('checked');", 200);}
                else {
                    return true
                }
            });
        });

你不需要each函数

$("input:radio").attr("checked", false);

Or

$("input:radio").removeAttr("checked");

同样也应该适用于你的文本框:

$('#frm input[type="text"]').val("");

但是你可以改进它

$('#frm input:text').val("");

Try

$(this).attr("checked" , false );

function setRadio(obj) 
{
    if($("input[name='r_"+obj.value+"']").val() == 0 ){
      obj.checked = true
     $("input[name='r_"+obj.value+"']").val(1);
    }else{
      obj.checked = false;
      $("input[name='r_"+obj.value+"']").val(0);
    }

}

<input type="radio" id="planoT" name="planoT[{ID_PLANO}]" value="{ID_PLANO}" onclick="setRadio(this)" > <input type="hidden" id="r_{ID_PLANO}" name="r_{ID_PLANO}" value="0" >

:D

谢谢帕特里克，你让我今天很开心!你必须使用鼠标下键。不过，我已经改进了代码，以便您可以处理一组单选按钮。

//We need to bind click handler as well
//as FF sets button checked after mousedown, but before click
$('input:radio').bind('click mousedown', (function() {
    //Capture radio button status within its handler scope,
    //so we do not use any global vars and every radio button keeps its own status.
    //This required to uncheck them later.
    //We need to store status separately as browser updates checked status before click handler called,
    //so radio button will always be checked.
    var isChecked;

    return function(event) {
        //console.log(event.type + ": " + this.checked);

        if(event.type == 'click') {
            //console.log(isChecked);

            if(isChecked) {
                //Uncheck and update status
                isChecked = this.checked = false;
            } else {
                //Update status
                //Browser will check the button by itself
                isChecked = true;

                //Do something else if radio button selected
                /*
                if(this.value == 'somevalue') {
                    doSomething();
                } else {
                    doSomethingElse();
                }
                */
            }
    } else {
        //Get the right status before browser sets it
        //We need to use onmousedown event here, as it is the only cross-browser compatible event for radio buttons
        isChecked = this.checked;
    }
}})());

重写Igor的代码为插件。

Use:

$('input[type=radio]').uncheckableRadio();

插件:

(function( $ ){

    $.fn.uncheckableRadio = function() {

        return this.each(function() {
            $(this).mousedown(function() {
                $(this).data('wasChecked', this.checked);
            });

            $(this).click(function() {
                if ($(this).data('wasChecked'))
                    this.checked = false;
            });
        });

    };

})( jQuery );