difference between dates in hours in moment.js code example

Example 1: moment date difference in days

moment(new Date()).diff(moment(new Date()), 'days') // 0

Example 2: moment js between two dates

// moment version => 2.13.0.
const start = moment().subtract(1, 'days');
const end = new Date();
const actual = moment().subtract(1, 'hours');
const test = moment(actual).isBetween(start, end);
console.log(test);
  
// moment version < 2.13.0.
var startDate = new Date(2013, 1, 12)
  , endDate   = new Date(2013, 1, 15)
  , date  = new Date(2013, 2, 15)
  , range = moment().range(startDate, endDate);
range.contains(date);

Example 3: calculate time difference in hrs moment

var duration = moment.duration(end.diff(startTime));
var hours = duration.asHours();