HTML | DOM Input DatetimeLocal form Property

Difficulty Level : Basic
Last Updated : 27 Feb, 2019

The Input DatetimeLocal form property in HTML DOM is used to return the reference to the form containing the local datetime field. It returns a form object on success, else if the date control is not in the form, it returns NULL. It is a read-only property.

Syntax:

datetimelocalObject.form

Below program illustrates the DatetimeLocal form property in HTML DOM:

Example: This example returns the id of the form containing the <input type=”datetime-local”> element.

<!DOCTYPE html>
<html>
      
<head> 
    <title>
        Input DatetimeLocal form Property
    </title> 
</head>
  
<body style="text-align:center;">
  
    <h1 style="color:green;">
        GeeksforGeeks
    </h1> 
      
    <h2 style="font-family: Impact;">
        Input DatetimeLocal form Property
    </h2><br>
      
    <form id="Test_Form">
        Test date control: <input type="datetime-local" 
                id="Test_DatetimeLocal">
    </form>
      
    <p>
        To return the id of the form, double click
        the "Return Form Object" button.
    </p>
      
    <button ondblclick="My_DatetimeLocal()">
        Return Form Object
    </button>
      
    <p id="test"></p>
      
    <!-- Script to return the form id -->
    <script>
        function My_DatetimeLocal() {
            var d = document.getElementById("Test_DatetimeLocal").form.id;
            document.getElementById("test").innerHTML = d;
        }
    </script>
</body>
  
</html>                                     