JavaScript Date setDate() Method

Below is the example of Date setDate() method.

  • Example:
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    <script>
       // Here a date has been assigned
       // while creating Date object
       var dateobj = 
       new Date('October 13, 1996 05:35:32');
      
       // new date 15 of the month is being set
       // in above Date Object with the help of 
       // setDate() method
       dateobj.setDate(15);
      
       // new date of the month from above Date
       // Object is being extracted using getDate()
       var B = dateobj.getDate();
      
       // Printing new date of the month
       document.write(B);
    </script>

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  • Output:
    15

The date.setDate() method is used to set date of a month into a date object which are created using date() constructor.
Syntax:

dateObj.setDate(date_Value);

Parameter: This method accept a single parameter as mentioned above and described below:

  • date_Value: It returns the new i.e updated date of the month which is set by setDate() method. The date of the month is an integer value ranging from 1 to 31.

Return value: This method return the number of milliseconds between the date object and midnight January 1, 1970

Note: DateObj is a valid Date object created using Date() constructor in which we want to set the date of a month.



More codes for the above method are as follows:
Program 1: Here as we know that date of the month, lies in between 1 to 31 but if we suppose to set the date of 33, it will set date 2 for the next month because 33-31=2 and this date 2 becomes date for next of the previous month. In below output 2 is the date of the November month and 10 is the month of November because the month name starts from 0 to 11 i.e, 0 for January and 11 for December.

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<script>
   // Here a date has been assigned
   // while creating Date object
   var dateobj = 
   new Date('October 13, 1996 05:35:32');
  
   // New date 33 of the month is being set 
   // in above Date Object with the help of 
   // setDate() method
   dateobj.setDate(33);
  
   // new date of the month from above Date
   // Object is being extracted using getDate()
   var B = dateobj.getDate();
  
   // new month from above Date Object is
   // being extracted using getMonth()
   var C = dateobj.getMonth();
  
   // Printing new date of the month
   document.write(B);
   document.write("<br />");
   // Printing new month
   document.write(C);
</script>

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Output:

2
10

Example 2: If in Date() constructor we do not give any date of the month, still setDate() method set new date which is given as its parameter.

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<script>
   // Here date has not been assigned
   // while creating Date object
   var dateobj = 
   new Date('October, 1996 05:35:32');
  
   // New date 12 of the month is being set 
   // in above Date Object with the help of 
   // setDate() method
   dateobj.setDate(12);
  
   // new date of the month from above Date 
   // Object is being extracted using getDate()
   var B = dateobj.getDate();
  
   // Printing new date of the month
   document.write(B);
</script>

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Output:

12

Example 3: If nothing as parameter is given in Date() constructor, still setDate() method set date but month becomes current month.

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<script>
   // Here a date has been assigned
   // while creating Date object
   var dateobj = new Date();
  
   // New date 13 of the month is being set 
   // in above Date  Object with the help of 
   // setDate() method
   dateobj.setDate(13);
  
   // Date of the month from above Date Object
   // is being extracted using getDate()
   var B = dateobj.getDate();
  
   // Month from above Date Object is
   // being extracted using getMonth()
   var C = dateobj.getMonth();
  
   // Printing new date of the month
   document.write(B + "<be>");
   document.write("<br />");
   // Printing new month
   document.write(C);                    
</script>

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Output:

13
2

Example 4: If new date of the month set to zero (0), the new date will be set to the last day of the previous month.

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<script>
   // Here a date has been assigned
   // while creating Date object
   var dateobj = 
   new Date('October 13, 1996 05:35:32');
  
   // new date 0 of the month is being set 
   // in above Date Object with the help of 
   // setDate() method
   dateobj.setDate(0);
  
   // Date of the month from above Date Object 
   // is being extracted using getDate()
   var B = dateobj.getDate();
  
   // Month from above Date Object is
   // being extracted using getMonth()
   var C = dateobj.getMonth();
  
   // Printing new date of the month
   document.write(B + "<be>");
   document.write("<br />");
   // Printing new month
   document.write(C);
</script>

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Output:

30
8

Supported Browsers: The browsers supported by JavaScript Date setDate() method are listed below:

  • Google Chrome
  • Internet Explorer
  • Mozilla Firefox
  • Opera
  • Safari

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