最近碰到一些企业网站需要定时开启关闭的需求，可能是网站维护或者是网站做整改需要特定的时间网站才开启访问，其余时间都是关闭状态。

JS实现方式，代码如下：

<script language="javascript" type="text/javascript"> 
// 以下方式定时跳转
var myTime = {
beginDateStr:'2023/06/20',
endDateStr:'2023/07/10',
beginTimeStr:'6:00',
endTimeStr:'22:00'
}

function isDuringDate(beginDateStr, endDateStr){
var curDate = new Date(),
            beginDate = new Date(beginDateStr),
            endDate = new Date(endDateStr);
        if (curDate >= beginDate && curDate <= endDate) {
            return true;
        }
        return false;
}

function checkAuditTime(beginTime, endTime) {
  var nowDate = new Date();
  var beginDate = new Date(nowDate);
  var endDate = new Date(nowDate);

  var beginIndex = beginTime.lastIndexOf("\:");
  var beginHour = beginTime.substring(0, beginIndex);
  var beginMinue = beginTime.substring(beginIndex + 1, beginTime.length);
  beginDate.setHours(beginHour, beginMinue, 0, 0);

  var endIndex = endTime.lastIndexOf("\:");
  var endHour = endTime.substring(0, endIndex);
  var endMinue = endTime.substring(endIndex + 1, endTime.length);
  endDate.setHours(endHour, endMinue, 0, 0);
  if (nowDate.getTime() - beginDate.getTime() >= 0 && nowDate.getTime() <= endDate.getTime()) {
      return true;
    } else {
      return false;
      }
    }

if(!isDuringDate(myTime.beginDateStr, myTime.endDateStr)){
window.location.href="/404";
}else{
if(!checkAuditTime(myTime.beginTimeStr, myTime.endTimeStr)){
window.location.href="/404";
}
}
</script>

其中开启与关闭日期请在这部分代码设置即可：

beginDateStr:'2023/06/20',
endDateStr:'2023/07/10',
beginTimeStr:'6:00',
endTimeStr:'22:00'