HTML | DOM Input Date defaultValue Property

Last Updated : 18 May, 2022

The Input Date defaultValue Property in HTML DOM is used to set or return the default value of a date field. This property is used to reflect the HTML value attribute. The main difference between the default value and value is that the default value indicate the default value and the value contains the current value after making some changes. This property is useful to find whether the Date field has been changed or not.

Syntax:

It is used to return the defaultValue property.

dateObject.defaultValue

It is used to set the defaultValue property.

dateObject.defaultValue = value

Property Values: It contains single property value which defines the default value for Input date field.
Return Value: It returns a string value which represent the default value of the input date field.
Example 1: This example illustrates how to return Input Date defaultValue property.

html

<!DOCTYPE html> 
<html> 
 
<head> 
    <title>
        HTML DOM Input Date defaultValue Property
    </title> 
 
    <style> 
        h1 { 
            color: green; 
        } 
         
        h2 { 
            font-family: Impact; 
        } 
         
        body { 
            text-align: center; 
        } 
    </style> 
</head> 
 
<body> 
    <h1>GeeksforGeeks</h1> 
 
    <h2>Input Date default Value Property</h2> 
    <br> 
 
    <input type="date" id="test_Date"
            value = "2014-02-09" autofocus> 
 
    <button ondblclick="My_Date()">Check</button> 
 
    <p id="test"></p>
 
  
 
    <script> 
        function My_Date() { 
            var d = document.getElementById("test_Date").defaultValue; 
            document.getElementById("test").innerHTML = d; 
        } 
    </script> 
</body> 
 
</html> 

Output:

Before Clicking On Button:

After Clicking On Button:

Example 2: This example set the Input Date defaultValue property.

html

<!DOCTYPE html> 
<html> 
 
<head> 
    <title>
        HTML DOM Input Date defaultValue Property
    </title> 
 
    <style> 
        h1 { 
            color: green; 
        } 
         
        h2 { 
            font-family: Impact; 
        } 
         
        body { 
            text-align: center; 
        } 
    </style> 
</head> 
 
<body> 
    <h1>GeeksforGeeks</h1>
  
    <h2>Input Date default Value Property</h2> 
    <br> 
 
    <input type="date" id="test_Date"
            value = "2014-02-09" autofocus> 
 
    <button ondblclick="My_Date()">Check</button> 
 
    <p id="test"></p>
 
  
 
    <script> 
        function My_Date() { 
            var d = document.getElementById(
                "test_Date").defaultValue =  " 2019-05-09";  
            document.getElementById("test").innerHTML
                = " The defaultValue was changed to " + d; 
        } 
    </script> 
</body> 
 
</html> 