打印从所选日期开始的天数

Question

我要打印从所选日期开始的天数。它不打印从当前日期到上一个日期的天数，而是打印结果（以毫秒为单位）。下面的代码段

 $scope.countDays= function( d2) {
              var diff = Math.abs(new Date().getTime() - d2.getTime());
              alert(diff); //prints milliseconds
              return diff / (1000 * 60 * 60 * 24);
            };

<input ng-model="dateSelection" ng-change="countDays(dateSelection)">

如何打印实际整数中的确切天数差异并禁用将来的日期选择

Answer 1

应该是

$scope.resumption = new Date(new Date().setDate(new Date().getDate() - 30));