织梦dedecms自定义表单中加入用户提交时间

<input name="timesj" value="" type="hidden" id="timesj" style="width:250px;" class="intxt" /> <script type="text/javascript">window.onload = function(){var nowDate = new Date();var str = nowDate.getFullYear()+"-"+(nowDate.getMonth() + 1)+"-"+nowDate.getDate()+" "+nowDate.getHours()+":"+nowDate.getMinutes()+":"+nowDate.getSeconds();document.getElementById("timesj").value=str;}</script>

<input type="hidden" name="timesj" id="timesj" value="{dede:php} echo $showtime=date('Y-m-d H:i:s');{/dede:php}" />

<input type="hidden" name="timesj" id="timesj" /> <script language="javascript" type="text/javascript"> var wdtime= new Date(); 　　document.getElementById("timesj").value=wdtime.toLocaleString(); </script>

if($fielddata[1]=='datetime'){    $fields[$field] = GetDateTimeMk($fields[$field]);}