HTML | DOM Output form Property

Last Updated : 23 Aug, 2019

The Output form Property in HTML DOM is used for returning a reference to the form where an <Output> Element belongs to. It is read-only Property that returns a form object on success.

Syntax:

outputObject.form

Note: There is no property values in HTML DOM Output form Property.

Return value: A reference to <form> element containing the <output> element. If <output> element is not in a form, null is returned

Example:

<!DOCTYPE html> 
<html> 
  
<head> 
    <title>HTML DOM output form Property </title> 
    <style> 
        body { 
            text-align: center; 
        } 
          
        h1 { 
            color: green; 
        } 
    </style> 
</head> 
  
<body> 
    <h1>GeeksforGeeks</h1> 
    <h2>HTML DOM Output Form Property</h2> 
    <form id="form1" oninput="sumresult.value = parseInt(A.value)  
                + parseInt(B.value) + parseInt(C.value)"> 
        <input type="number" name="A" value="50" /> + 
        <input type="range" name="B" value="0" /> + 
        <input type="number" name="C" value="50" /> 
        <br /> Submit Result: 
        <output id="geeks" name="sumresult" for="A B C"></output> 
        <br> 
        <br> 
  
    </form> 
    <button onclick="myGeeks()">submit</button> 
    <h2 id="sudo"></h2> 
    <script> 
        function myGeeks() { 
            var g = document.getElementById("geeks").form.id; 
            document.getElementById("sudo").innerHTML = g; 
        } 
    </script> 
  
</body> 
  
</html> 