HTML | DOM Input Datetime form Property

The Input Datetime form property is used for returning a reference to the form containing the Datetime field. It is a read-only property that returns a form object on success, else if the date control is not in the form, it returns NULL.



Below program illustrates the Datetime form property:
Example: Returning the id of the form containing the <input type=”datetime”> element.





<!DOCTYPE html>
    <title>Input Datetime form Property in HTML
        h1 {
            color: green;
        h2 {
            font-family: Impact;
        body {
            text-align: center;
    <h2>Input Datetime form Property</h2>
    <form id="Test_Form">
        Test date control:
        <input type="datetime"
    <p>To return the id of the form, double
      click the "Return Form Object" button.</p>
    <button ondblclick="My_Datetime()">
      Return Form Object
    <p id="test"></p>
        function My_Datetime() {
            // Return form ID
            var d = 
            document.getElementById("test").innerHTML = d;



Before clicking the button:

After clicking the button:

Supported Browsers:

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

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