jquery父页面向子页面传值后，radio选不中

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js" type="text/javascript"></script>
<title>无标题文档</title>
</head><body>
<input type="radio" name="a" checked="checked" value="1" />选我
<input type="radio" name="a" value="1" />选Ta
<script type="text/javascript">
jQuery(function($){
alert($(':radio:checked').val());
});
</script>
</body>
</html>

谢谢大大的回答，可是父页面上也没有value

没有value怎么知道哪个被选中了呀

如果是用脚本控制选中项的，要用prop,checked不行。

选中没效果，值没有传到iframe中？

// 在点击添加之前，存储已经添加好的题目ID
                    var toId = '';
                    if ($('.addTopic_list li').size() > 0) {
                        $('.addTopic_list li').each(function () {
                            toId += ',' + $(this).attr('rel');
                        })
                        toId = toId + ',';
                    }                    var topics = '';
                    var operate = "<p class='operate'><label class='lc'>操作：</label><label style='cursor: pointer' class='com editTopic'>编辑</label><label style='cursor: pointer' class='delTopic'>删除</label></p>";                     // 获取题目内容前，要对比下该题目的ID是否在已添加的题目列表里，在就不用添加
                    $(window.parent.document).find('.topicOption p span.selected').each(function() {
                        var tmp = ',' + $(this).parent().parent().attr('rel') + ',';
                        if (toId.indexOf(tmp) == -1) {                            // 标题
                            var title = $(this).parent().siblings().find('.ttitle').text();                            // 内容
                            var content = $(this).parent().siblings().find('.tcontent').text();                            // 答案
                            var answer = $(this).parent().parent().attr('attr') == 3 ? '<ul class="dalist1">' + $(this).parent().siblings().find('.tanswer').html() + '</ul>' : $(this).parent().siblings().find('.tanswer').html();
                            topics += "<li rel='" + $(this).parent().parent().attr('rel') + "' attr='" + $(this).parent().parent().attr('attr') + "'><div class='ttitle'>" + title + "</div><div class='tcontent'>" + content + "</div><div class='tanswer'>" + answer + "</div>" + operate + "</li>";
                            answerObject[$(this).parent().parent().attr('rel')] = {
                                dbStatus: 2,
                                to_type: $(this).parent().parent().attr('attr'),
                                to_answer: getAnswer($(this).parent().next().find('.tanswer'), $(this).parent().parent().attr('attr')),
                                to_option: getOption($(this).parent().next().find('.tanswer'), $(this).parent().parent().attr('attr')),
                                to_title: $(this).parent().next().find('.tcontent').text()
                            };
                        }
                    })                    // 把选中的节点追加到addTopic_list后面
                    $('.addedTopic_box .addTopic_list').append(topics);

我是直接把那块代码html()直接获得的

在哪负责创建input type="radio"

    // 单选题
    function syncSingle(i, num, answer) {
        var num = num.split(',');
        var html = '';
        var answer = eval('(' + answer + ')');
        for (var j = 0; j < num.length; j++) {
            html += '<input value="' + j + '" type="radio" name="single' + i + '"';
            if (j == parseInt(answer)) {
                html += 'checked="checked"';
            }
            html += '><label class="option" style="cursor: pointer;">' + infor(j) + '</label>';
        }        return html;
    }

哪现在标注radio选中的回答对不对呀，我的意思是如果答案是1，value=1的radio有没有checked属性呀另外,单选就一个答案，为什么要用eval呀？

答案都存成json格式了，数据库里这种形式的["1"]

syncSingle的返回值怎么添加到容器里面的，发来看下

    // 单击搜索功能
    function getSearchResult(p) {         var obj = {};        // 获取页码
        obj.p = p ? p : 1;        // 获取搜索框的内容
        obj.content = $('input[name=search]').val();        // 获取选择题型ID
        obj.to_type = $('.topic_type .on').attr('rel')        // 获取添加的学科领域
        obj.hotTag = '';
        $('.subjectAdd .hand').each(function() {
            obj.hotTag += $(this).attr('rel') + ',';
        })
        obj.hotTag = obj.hotTag.slice(0, -1);        // 异步传值
        $.post('/Topic/search', obj, function(json) {            var html = '';
            // 在弹出框里显示搜索出来的数据
            if (json['list']) {                for (var i = 0; i < json['list'].length; i++) {
                    html += '<div class="topicOption fl" rel="' + json['list'][i]['to_id'] + '" attr="' + json['list'][i]['to_type'] + '" owner="' + json['list'][i]['a_id'] + '">'
                            + '<p>'
                            + '<span>' + (i + 1) + '</span>'
                            + '<a class="editResource">编辑</a>'
                            + '</p>'
                            + '<div class="topicObj fl">'
                            + '<div class="ttitle">' + getIdByTopicType(json['list'][i]['to_type']) + '</div>'
                            + '<div class="tcontent">'
                            + json['list'][i]['to_title']
                            + '</div>'
                            + '<div class="tanswer">';
                    if (json['list'][i]['to_type'] == 1) {
                        html += syncSingle(syncCount, json['list'][i]['to_option'], json['list'][i]['to_answer']);
                    } else if (json['list'][i]['to_type'] == 2) {
                        html += syncMulti(json['list'][i]['to_option'], json['list'][i]['to_answer']);
                    } else if (json['list'][i]['to_type'] == 3) {
                        html += syncFill(json['list'][i]['to_option'], json['list'][i]['to_answer']);
                    } else if (json['list'][i]['to_type'] == 4) {
                        html += syncJudge(syncCount, json['list'][i]['to_option'], json['list'][i]['to_answer']);
                    } else {
                        html += '<label style="cursor: pointer;">' + syncShort(json['list'][i]['to_answer']) + '</label>';
                    }
                    html += '</div>'
                         +  '</div>'
                         +  '</div>'
                    syncCount++;
                }
            } else {
                html += '<div class="topicOption fl">暂无相关题目</div>';
                json['page'] = '';
            }            // 显示内容
            $('#reslibrary').find('.resourceContent').html(html);            // 显示分页
            $('.page').html(json['page']);        }, 'json')
    }上面调用代码
下面是json格式的数据{"page":"<a class='current' href='javascript:void(0);'>1<\/a><a href='javascript:getList(2);'>2<\/a><a href='javascript:getList(3);'>3<\/a><a href='javascript:getList(4);'>4<\/a><a href='javascript:getList(5);'>5<\/a>  <a href='javascript:getList(2);'>\u4e0b\u4e00\u9875<\/a> <a href='javascript:getList(19);'>\u6700\u540e\u4e00\u9875<\/a>  <a href=\"javascript:void(0);\">1\/19\u9875<\/a> <a href=\"javascript:void(0);\">92\u6761\u8bb0\u5f55<\/a>","list":[{"to_id":"92","a_id":"2","s_id":"1","to_title":"\u963f\u65af\u8482\u82ac\u6492\u53cd\u5bf9","to_type":"1","to_option":"0,1,2,3","to_answer":"[\"3\"]","to_note":"","to_peoples":"0","to_created":"1373682070","to_updated":"0","to_deleted":"0"},{"to_id":"91","a_id":"2","s_id":"1","to_title":"<p>\u591a\u5c11\u5929<\/p>","to_type":"1","to_option":"0,1,2,3","to_answer":"[\"2\"]","to_note":"","to_peoples":"0","to_created":"1373677212","to_updated":"1373677226","to_deleted":"0"},{"to_id":"90","a_id":"2","s_id":"1","to_title":"sadf","to_type":"1","to_option":"0,1,2,3","to_answer":"[\"1\"]","to_note":"","to_peoples":"0","to_created":"1373618621","to_updated":"0","to_deleted":"0"},{"to_id":"89","a_id":"2","s_id":"1","to_title":"<p>\u963f\u8428\u5fb7\u53d1\u5c04\u70b9\u53d1\u545c\u545c\u545c<\/p>","to_type":"3","to_option":"0","to_answer":"[\"\\u963f\\u8428\\u5fb7\\u53d1\\u751f\\u53d1\"]","to_note":"","to_peoples":"0","to_created":"1373608909","to_updated":"1373615683","to_deleted":"0"},{"to_id":"88","a_id":"2","s_id":"1","to_title":"<p>\u6d4b\u8bd5\u4f5c\u4e1a\u53d1\u5e03<\/p>","to_type":"4","to_option":"0,1","to_answer":"[\"0\"]","to_note":"","to_peoples":"0","to_created":"1373606127","to_updated":"1373615711","to_deleted":"0"}]}

调试易

jquery父页面向子页面传值后，radio选不中

解决方案 »