//判断时间是否相等
  function compareDate(date1, date2) {
    //相等
    if (date1 == date2) {
      return true;
    }
    var startTime = date1;
    var start = new Date(startTime.replace(/-/g, "/"));
    var endTime = date2;
    var end = new Date(endTime.replace(/-/g, "/"));
    if (end != start) {
      return false;
    }
    return true;
  }

  //判断时间是否在范围内
  function datetimeComper(year, month, day, currtime) {
    //var curr = "09:00:00";
    var begin = "09:00:00";
    var end = "16:00:00";
    var currd = new Date(year, month, day, currtime.split(":")[0], currtime.split(":")[1], currtime.split(":")[2]);
    var begind = new Date(year, month, day, begin.split(":")[0], begin.split(":")[1], begin.split(":")[2]);
    var endd = new Date(year, month, day, end.split(":")[0], end.split(":")[1], end.split(":")[2]);

    if (currd >= begind && currd <= endd) {
      return true;
    } else {
      return false;
    }
  }

最近用到感觉实用的JS操作时间的函数