签到时间

<script>
    $(function () {
        $("#qiandao").click(function () {
            var b = new Date();
              var  str = "";
           
      
            str += b.getHours() + ":";
            str += b.getMinutes() + ":";
            str += b.getSeconds();
            $.ajax({
                url: ‘/cxl/qiandao‘,
                data: { time: str },
                type: ‘post‘,
                success: function (data) {
                    if (data == 0) {
                        alert(‘签到失败！！‘);
                    }
                    else {
                        alert("签到成功！");
                        $("#s1").html(str);
                    }
                }

            })
        })
    })
    function shijian() {
        var d = new Date(), str = ‘‘;
        str += d.getFullYear() + ‘年‘;
        str += d.getMonth()+ 1 + ‘月‘;
        str += d.getDate() + ‘日‘;
        str += d.getHours() + ‘:‘;
        str += d.getMinutes() + ‘:‘;
        str += d.getSeconds()+‘    ‘;
        str += ‘今天星期‘ + d.getDay();
        return str;
    }
    setInterval(function () { $(‘#dangqinashijian‘).html(shijian()) }, 1000);
</script>
<h2>当前时间：<span id="dangqinashijian"></span></h2>

<input id="qiandao" type="button" value="签到" /><span id="s1"></span><br />
<input id="qiantui" type="button" value="签退" />

qiandao方法：
 public int qiandao(string time)
        {
            //获取规定上班的时间
            string times = ConfigurationManager.AppSettings["up"].ToString();
            if (DateTime.Parse(time) > DateTime.Parse(times))
            {
                //如果超过规定时间就算是迟到，打不上卡
                return 0;
            }
            else
            {
                return 1;
            }
        }

MVC webcfg：
<appSettings>标签内
<add key="up" value="08:00:00"/>