HTML | DOM Input Datetime defaultValue Property

The Input Datetime defaultValue property in HTML DOM is used to set or return the default value of a datetime 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 indicates the default value of the property and the value contains the current value after making some changes. This property is used to find whether the Date field has been changed or not.

Syntax:

  • It is used to return the defaultValue property.
    datetimeObject.defaultValue
  • It is used to set the defaultValue property.
    datetimeObject.defaultValue = value

Property Values: It contains single property value value which defines the default value for Input date field.



Return Value: It returns a string value which represents the default value of the text field.

Example 1: This example illustrates how to return the Input Datetime defaultValue property.

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<!DOCTYPE html> 
<html
  
<head
    <title
        HTML DOM Input Datetime defaultValue Property
    </title
</head
  
<body style="text-align:center;"
  
    <h1 style="color: green;">
        GeeksforGeeks
    </h1
      
    <h2 style="font-family: Impact;">
        Input Datetime defaultValue Property
    </h2
    <br
  
    <input type="datetime" id="test_Datetime"
        value="2019-07-02T25:32Z" autocomplete="on"
  
    <button ondblclick="My_Datetime()"
        Check 
    </button
  
    <p id="test"></p
  
    <script
        function My_Datetime() { 
              
            // Return the Datetime autofocus 
            // property Value. 
            var d = document.getElementById( 
                "test_Datetime").defaultValue; 
              
            document.getElementById("test").innerHTML
                = d; 
        
    </script
</body
  
</html>           

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Output:

  • Before Clicking the Button:
  • After Clicking the Button:

Example 2: This example illustrates how to return Input datetime defaultValue property.

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<!DOCTYPE html> 
<html
  
<head
    <title
        HTML DOM Input Datetime defaultValue Property
    </title
</head
  
<body style="text-align:center;"
  
    <h1 style="color: green;">
        GeeksforGeeks
    </h1
      
    <h2 style="font-family: Impact;">
        Input Datetime defaultValue Property
    </h2
    <br
  
    <input type="datetime" id="test_Datetime"
        value="2019-07-02T25:32Z" autocomplete="on"
  
    <button ondblclick="My_Datetime()"
        Check 
    </button
  
    <p id="test"></p
  
    <script
        function My_Datetime() { 
              
            // Return the Datetime autofocus 
            // property Value. 
            var d = document.getElementById( 
                    "test_Datetime").defaultValue
                    = "2015-01-02T11:42:13.510"; 
              
            document.getElementById("test").innerHTML
                    = "The value was changed to " + d; 
        
    </script
</body
  
</html>     

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Output:

  • Before Clicking the Button:
  • After Clicking the Button:

Supported Browsers: The browsers supported by HTML DOM Input Datetime defaultValue Property are listed below:

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


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