The Input Date form property is used for returning a reference to the form containing the Date 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.
Syntax:
inputdateObject.form
Return Values: It returns a string value which specify the reference of the form containing the Input Date field.
Below program illustrates the Date form property :
Example: Returning the id of the form containing the <input type="date"> element.
<!DOCTYPE html>
<html>
<head>
<title>Input Date form Property in HTML
</title>
<style>
h1 {
color: green;
}
h2 {
font-family: Impact;
}
body {
text-align: center;
}
</style>
</head>
<body>
<h1>GeeksforGeeks</h1>
<h2>Input Date form Property</h2>
<br>
<form id="Test_Form">
Test date control:
<input type="date"
id="Test_Date">
</form>
<p>To return the id of the form,
double click the "Return
Form Object" button.</p>
<button ondblclick="My_Date()">
Return Form Object
</button>
<p id="test"></p>
<script>
function My_Date() {
// Returning form id.
var d =
document.getElementById("Test_Date").form.id;
document.getElementById("test").innerHTML = d;
}
</script>
</body>
</html>
Output:
Before clicking the button:

After clicking the button:

Supported Browsers:
- Apple Safari 14.1
- Edge 12
- Firefox 57
- Google Chrome 20
- Opera 11