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JavaScript setDate Function

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JavaScript setDate function is one of the Date Function, which is used to set the Day number of a given date as per local time. In this article, we will show you, How to use Set Date in JavaScript Programming with an example.

Syntax of setDate in JavaScript

The basic syntax for this setDate function is:

 Date.setDate(Day_Number)

JavaScript setDate Function Example

The following example helps you understand the JavaScript set Date Function. Here, we are using setDate to set the current day to 25th.

<!DOCTYPE html>
<html>
<head>
    <title> JavaScript Set Date Functions </title>
</head>
<body>
    <h1> JavaScript setDate Function Example </h1>
<script>
  var dt = Date();  
  document.write("Date and Time : " + dt + "<br/>");

  dt.setDate(25);
  document.write("After setDate() : " + dt);
</script>
</body>
</html>

OUTPUT

JavaScript setDate Function 1

JavaScript set Date Function Example 2

In this setDate function example, we set the day number of a custom date to 31

<!DOCTYPE html>
<html>
<head>
    <title> JavaScript Set Date Functions </title>
</head>
<body>
    <h1> JavaScript setDate Function Example </h1>
<script>
  var dt = Date("December 1, 2016 10:11:22"); 
  document.write("Date and Time : " + dt + "<br/>");

  dt.setDate(31);
  document.write("After setDate() : " + dt);
</script>
</body>
</html>

OUTPUT

JavaScript setDate Function 2

JavaScript set Date Function Example 3

In this JavaScript setDate example, we set the day number of custom date (without Day or Month) to 31.

<!DOCTYPE html>
<html>
<head>
    <title> JavaScript Set Date Functions </title>
</head>
<body>
    <h1> JavaScript setDate Function Example </h1>
<script>
  var dt = Date("2016 10:11:22"); 
  document.write("Date and Time : " + dt + "<br/>");

  dt.setDate(31);
  document.write("After setDate() : " + dt);
</script>
</body>
</html>

OUTPUT

JavaScript setDate Function 3

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