Calculating date difference with angular filter

问题

I needed to be able to calculate the difference between two days, inclusive, and display the difference. Ideally this would be via an angular filter so it can be used all over the application.

回答1:

JS Filter

generalFilters.filter('dateDiff', function () {
  var magicNumber = (1000 * 60 * 60 * 24);

  return function (toDate, fromDate) {
    if(toDate && fromDate){
      var dayDiff = Math.floor((toDate - fromDate) / magicNumber);
      if (angular.isNumber(dayDiff)){
        return dayDiff + 1;
      }
    }
  };
});

HTML to display the value.

<div class="field-value">{{entry.toStr | dateDiff:entry.fromStr}} <ng-pluralize count="entry.toStr | dateDiff:entry.fromStr" when="{1:'Day', other: 'Days'}"></ng-pluralize></div>

回答2:

Duplicate of 26649194

angular-moment does the trick! ...and (very) else more.

Using the amDifference filter:

Get the difference between two dates in milliseconds. Parameters are date, units and usePrecision. Date defaults to current date. Example:

<span>Difference: {{ dateFrom | amDifference : dateTo : 'days' }} days</span>

来源：https://stackoverflow.com/questions/25635082/calculating-date-difference-with-angular-filter