点击日历显示日期jquery

var today = new Date();
var selectedDay = today.getDate();
var selectMonth =  today.getMonth()+1
function dateClick(_this){
    selectedDay = $(_this).html();
    refreshActivityList();
}
function refreshActivityList() {
    $('.day').html(selectedDay);
    $('.month').html(selectMonth+'月');
}

<meta charset="utf-8">
<link href="//cdn3.maxuscloud.com/r/cms/pc/css/newhome/index.css" rel="stylesheet" media="all">
<link rel="stylesheet" type="text/css" href="//cdn3.maxuscloud.com/r/cms/pc/css/newhome/dateRange.css">
    <div id="calendar_1507462500931" class="ta_calendar ta_calendar2 cf" >
            <div class="ta_calendar_cont cf" id="dateRangePicker_1507462500931">
                <table class="dateRangeDateTable">
                    <caption>2017年10月</caption>
                    <thead>
                        <tr>
                            <th>S</th>
                            <th>M</th>
                            <th>T</th>
                            <th>W</th>
                            <th>T</th>
                            <th>F</th>
                            <th>S</th>
                        </tr>
                    </thead>
                    <tr>
                        <td id="calendar_1507462500931_2017-10-1" ><span onclick="dateClick(this);">1</span></td>
                        <td id="calendar_1507462500931_2017-10-2" ><span onclick="dateClick(this);">2</span></td>
                        <td id="calendar_1507462500931_2017-10-3" ><span onclick="dateClick(this);">3</span></td>
                        <td id="calendar_1507462500931_2017-10-4" ><span onclick="dateClick(this);">4</span></td>
                        <td id="calendar_1507462500931_2017-10-5" ><span onclick="dateClick(this);">5</span></td>
                        <td id="calendar_1507462500931_2017-10-6" ><span onclick="dateClick(this);">6</span></td>
                        <td id="calendar_1507462500931_2017-10-7" ><span onclick="dateClick(this);">7</span></td>
                    </tr>
                    <tr>
                        <td id="calendar_1507462500931_2017-10-8" ><span onclick="dateClick(this);">8</span></td>
                        <td id="calendar_1507462500931_2017-10-9" ><span onclick="dateClick(this);">9</span></td>
                        <td id="calendar_1507462500931_2017-10-10" ><span onclick="dateClick(this);">10</span></td>
                        <td id="calendar_1507462500931_2017-10-11" ><span onclick="dateClick(this);">11</span></td>
                        <td id="calendar_1507462500931_2017-10-12" ><span onclick="dateClick(this);">12</span></td>
                        <td id="calendar_1507462500931_2017-10-13" ><span onclick="dateClick(this);">13</span></td>
                        <td id="calendar_1507462500931_2017-10-14" ><span onclick="dateClick(this);">14</span></td>
                    </tr>
                    <tr>
                        <td id="calendar_1507462500931_2017-10-15" ><span onclick="dateClick(this);">15</span></td>
                        <td id="calendar_1507462500931_2017-10-16" ><span onclick="dateClick(this);">16</span></td>
                        <td id="calendar_1507462500931_2017-10-17" ><span onclick="dateClick(this);">17</span></td>
                        <td id="calendar_1507462500931_2017-10-18" ><span onclick="dateClick(this);">18</span></td>
                        <td id="calendar_1507462500931_2017-10-19" ><span onclick="dateClick(this);">19</span></td>
                        <td id="calendar_1507462500931_2017-10-20" ><span onclick="dateClick(this);">20</span></td>
                        <td id="calendar_1507462500931_2017-10-21" ><span onclick="dateClick(this);">21</span></td>
                    </tr>
                    <tr>
                        <td id="calendar_1507462500931_2017-10-22" ><span onclick="dateClick(this);">22</span></td>
                        <td id="calendar_1507462500931_2017-10-23" ><span onclick="dateClick(this);">23</span></td>
                        <td id="calendar_1507462500931_2017-10-24" ><span onclick="dateClick(this);">24</span></td>
                        <td id="calendar_1507462500931_2017-10-25" ><span onclick="dateClick(this);">25</span></td>
                        <td id="calendar_1507462500931_2017-10-26" ><span onclick="dateClick(this);">26</span></td>
                        <td id="calendar_1507462500931_2017-10-27" ><span onclick="dateClick(this);">27</span></td>
                        <td id="calendar_1507462500931_2017-10-28" ><span onclick="dateClick(this);">28</span></td>
                    </tr>
                    <tr>
                        <td id="calendar_1507462500931_2017-10-29" ><span onclick="dateClick(this);">29</span></td>
                        <td id="calendar_1507462500931_2017-10-30" ><span onclick="dateClick(this);">30</span></td>
                        <td id="calendar_1507462500931_2017-10-31" ><span onclick="dateClick(this);">31</span></td>
                    </tr>
                </table>
    </div>
    <div class="time-list non-activity" >
        <div class="time-item">
            <p class="time-month">
                <b class="day">11</b> <span class="month">10月</span>
            </p>
        </div>
    </div>
</div>
<script src="//cdn3.maxuscloud.com/r/cms/pc/framework/jquery/jquery-3.1.0.min.js"></script>
<script type="text/javascript" src="newIndex.js"></script>