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HTML | DOM Input Datetime defaultValue Property

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  • Last Updated : 22 May, 2022

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 Datetime field.
Return Value: It returns a string value which represents the default value of the Input Datetime field.
Example 1: This example illustrates how to return the Input Datetime defaultValue property.
 

html




<!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 defaultValue
            var d = document.getElementById(
                "test_Datetime").defaultValue;
             
            document.getElementById("test").innerHTML
                = d;
        }
    </script>
</body>
 
</html>          

Output: 
 

  • Before Clicking the Button: 
     

  • After Clicking the Button: 
     

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

html




<!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() {
             
            // Set the Datetime defaultValue
            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>    

Output: 
 

  • Before Clicking the Button: 
     

  • After Clicking the Button: 
     

Note: The <input type=”datetime-local”> element does not show any datetime field/calendar in Firefox.

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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