How to get a decimal portion of a number with JavaScript?

With JavaScript, use the % operator to get the decimal portion of a number.

Example

You can try to run the following to get decimal portion −

Live Demo

<!DOCTYPE html>
<html>
   <body>
      <script>
         var num1 = 5.3;
         var num2 = 4.2;
         var num3 = 8.6;

         document.write(num1 % 1);
         document.write("<br>"+num2 % 1);
         document.write("<br>"+num3 % 1);
      </script>
   </body>
</html>

Output

0.2999999999999998
0.20000000000000018
0.5999999999999996
Updated on: 2020-06-17T06:35:57+05:30

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