关于前台日期转换和比较大小以及今天前三天日期

  var meetingDate = new Date();
      $scope.meetingYear = meetingDate.getFullYear();
      $scope.meetingMonth = meetingDate.getMonth() + 1;
      $scope.meetingDay = meetingDate.getDate();
      $scope.meetingHour = meetingDate.getHours();
      $scope.meetingMinutes = meetingDate.getMinutes();
      $scope.dateStr = meetingDate.getFullYear() + "-" + ((meetingDate.getMonth() + 1) < 10 ? "0" : "") + (meetingDate.getMonth() + 1) + "-" + (meetingDate.getDate() < 10 ? "0" : "") + meetingDate.getDate();

 function formatDate(date) {
         var year = date.getFullYear();
         var month = date.getMonth() + 1;
         var day = date.getDate();
         var hour = date.getHours();
         var minute = date.getMinutes();
         var second = date.getSeconds();
         return year + "-" + formatTen(month) + "-" + formatTen(day);

      }

$scope.siteNewEndDate = siteEndDate.getFullYear() + "-" + ((siteEndDate.getMonth() + 1) < 10 ? "0" : "") + (siteEndDate.getMonth() + 1) + "-" + (siteEndDate.getDate() < 10 ? "0" : "") + siteEndDate.getDate() +
            " " + ((siteEndDate.getHours() + 1) < 10 ? "0" : "") + (siteEndDate.getHours()) + ":" + ((siteEndDate.getMinutes() + 1) < 10 ? "0" : "") + (siteEndDate.getMinutes());
         var sDate = new Date($scope.siteStartDate.replace(/-/g, '/'));
         var eDate = new Date($scope.siteNewEndDate.replace(/-/g, '/'));

前三天

 var threeAgo = sitebeginDate.getTime()-3*24*60*60*1000;
      $scope.beginDate = new Date(threeAgo).getFullYear() + "-" + ((new Date(threeAgo).getMonth() + 1) < 10 ? "0" : "") + (new Date(threeAgo).getMonth() + 1) + "-" + (new Date(threeAgo).getDate() < 10 ? "0" : "") + new Date(threeAgo).getDate();