Compare two dates with JavaScript

Compare two dates with JavaScript. Here we will learn, how to compare two dates with javascript. Learn different techniques to compare 2 dates in javascript with examples.

In this tutorial, we will take several examples for comparing two dates in javascript with time, without time and date and current date.

First Method – Compare two dates with JavaScript

You can use the below javascript code for comparing two dates without time:

   var date1 = new Date('2019-06-27');
   var date2 = new Date('2019-05-25');
    if(date1>date2){
      document.write('date1>date2');
    } else if(date1<date2) {
       document.write('date1<date2');
    }
    else{
      document.write('false');
    }

Ex:-

<!DOCTYPE html>
<html>
<head>
  <title>Compare two dates javascript</title>
</head>
<body>
  <script type="text/javascript">
    var date1 = new Date('2019-06-27');
    var date2 = new Date('2019-05-25');
    if(date1>date2){
      document.write('date1>date2');
    } else if(date1<date2) {
       document.write('date1<date2');
    }
    else{
      document.write('false');
    }
  </script>
</body>
</html>

Result of the above code is: date1>date2

Second Method – compare date with current date in javascript

Let’s take the second example for compare date with the current date in javascript:

    var currentDate = new Date();
    var date = new Date('2019-12-28');

    if(currentDate>date){
      document.write('currentDate > date');
    }else if(currentDate<date) {
       document.write('currentDate < date');
    }
    else{
      document.write('currentDate==date');
    }

Ex:-

<!DOCTYPE html>
<html>
<head>
  <title>compare date with current date in javascript</title>
</head>
<body>
  <script type="text/javascript">
    var currentDate = new Date();
    var date = new Date('2019-12-28');

    if(currentDate>date){
      document.write('currentDate > date');
    }else if(currentDate<date) {
       document.write('currentDate < date');
    }
    else{
      document.write('currentDate==date');
    }
  </script>
</body>
</html>

Result of the above code is: currentDate < date

Third method – javascript compare dates with time

Let’s take an example to compare two dates with time:

    var date1 = new Date( "Dec 18, 2019 20:40:45" );
    var date2 = new Date( "Nov 15, 2018 21:35:40" );

    if(date1>date2){
      document.write('date1 > date2');
    }else if(date1<date2) {
       document.write(' date1 < date2 ');
    }
    else{
      document.write(' date1 == date2 ');
    }

Ex:-

<!DOCTYPE html>
<html>
<head>
  <title>javascript compare dates with time</title>
</head>
<body>
  <script type="text/javascript">
    var date1 = new Date( "Dec 18, 2019 20:40:45" );
    var date2 = new Date( "Nov 15, 2018 21:35:40" );

    if(date1>date2){
      document.write('date1 > date2');
    }else if(date1<date2) {
       document.write(' date1 < date2 ');
    }
    else{
      document.write(' date1 == date2 ');
    }
  </script>
</body>
</html>

Result of the above code is: date1 > date2

Fourth Method – javascript compare two dates with time

Here we will take example to compare two dates using the getTime() method:

      var d1 = new Date( " Wed Nov 26 2019 09:52:06 " ); 
      var d2 = new Date(); 
      document.write("date 1 is :- " + d1); 
      document.write("<br>"); 
      document.write("date 2 is :- " + d2); 
      document.write("<br>"); 
      if (d1.getTime() === d2.getTime()) 
          document.write("Both  are equal"); 
      else
          document.write("Not equal");

Ex:-

      var d1 = new Date( " Wed Nov 26 2019 09:52:06 " ); 
      var d2 = new Date(); 
      document.write("date 1 is :- " + d1); 
      document.write("<br>"); 
      document.write("date 2 is :- " + d2); 
      document.write("<br>"); 
      if (d1.getTime() === d2.getTime()) 
          document.write("Both  are equal"); 
      else
          document.write("Not equal");

Result of above code is:

date 1 is :- Tue Nov 26 2019 09:52:06 GMT+0530 (India Standard Time)
date 2 is :- Wed Nov 27 2019 09:52:50 GMT+0530 (India Standard Time)
Not equal

If you want to know more about javascript date and time methods, you may like following date and time methods:

Compare two dates with JavaScript – Examples