angularjs How to get time difference from ZoneDateTime in javascript

Getting Time Difference from ZoneDateTime in Javascript using AngularJS#

If you are working with AngularJS and need to calculate the time difference between two ZoneDateTime objects, you can use the built-in Date object in JavaScript. Here are some methods you can use:

Method 1: Use getTime() method#

This method involves converting the ZoneDateTime objects to Unix timestamps using the getTime() method and then subtracting them to get the time difference in milliseconds:

      var date1 = new Date('2021-05-15T10:00:00.000Z');
      var date2 = new Date('2021-05-15T11:30:00.000Z');
      
      var diff = Math.abs(date2.getTime() - date1.getTime());
      
      console.log(diff); //Output: 5400000 (milliseconds)
    

Method 2: Use moment.js library#

Moment.js is a powerful JavaScript library that simplifies working with dates and times. You can use it to calculate the time difference between two ZoneDateTime objects like this:

      var date1 = moment('2021-05-15T10:00:00.000Z');
      var date2 = moment('2021-05-15T11:30:00.000Z');
      
      var diff = date2.diff(date1, 'milliseconds');
      
      console.log(diff); //Output: 5400000 (milliseconds)
    

Using moment.js has the advantage of being more straightforward and providing more options for formatting and manipulating dates and times.

Conclusion#

Calculating the time difference between two ZoneDateTime objects in JavaScript is relatively straightforward using either the built-in Date object or a library like moment.js. Depending on your needs and experience, you can choose the method that works best for you.