Javascript Reference - HTML DOM Input Checkbox form Property

The read only form property returns a reference to the form containing the checkbox.

Browser Support


`form`	Yes	Yes	Yes	Yes	Yes

Syntax

var v = checkboxObject.form

Return Value

A reference to the form element containing the checkbox. If the checkbox is not in a form, null is returned.

Example

The following code shows how to get the id of the form containing the <input type="checkbox"> element.


<!DOCTYPE html>
<html>
<body>
<!--   w w  w. j av  a  2 s.  c  om-->
<form id="myForm">
Checkbox: <input type="checkbox" id="myCheck">
</form>
<button onclick="myFunction()">test</button>
<p id="demo"></p>
<script>
function myFunction() {
    var x = document.getElementById("myCheck").form.id;
    document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>

The code above is rendered as follows: