HTML | DOM Input Hidden value Property

Last Updated : 24 Aug, 2022

The Input Hidden value property in HTML DOM is used to set or return the value of the value attribute of the hidden input field. The value attribute defines the default value of the input hidden field.

Syntax:

It returns the value property.

hiddenObject.value

It is used to set the value property.

hiddenObject.value = text

Property Values: This property contains single value text which is used to specify the initial value of the input hidden field. Return Value: It returns a string value which represent the value of the value attribute of the hidden input field.

Example 1: This example illustrates how to return the hidden value property.

html

<!DOCTYPE html>
<html>
    
<head>
    <title>
        HTML DOM Input Hidden value Property
    </title>
</head>  

<body style="text-align:center;">

    <h1 style="color:green;">
        GeeksForGeeks 
    </h1>
    
    <h2>DOM Input Hidden value Property</h2>
    
    <input type="hidden" id="GFG"
                value="GeeksForGeeks">
    
    
    <button onclick="myGeeks()">
        Submit
    </button>
    
    <p id="sudo" style="color:green;font-size:35px;"></p>

    
    <!-- Script to return the hidden value -->
    <script>
        function myGeeks() {
            var x = document.getElementById("GFG").value;
            document.getElementById("sudo").innerHTML = x;
        }
    </script>
</body>

</html>

Output: Before clicking on the button :

After clicking on the button:

Example 2: This example illustrate how to set the hidden property.

html

<!DOCTYPE html>
<html>
    
<head>
    <title>
        HTML DOM Input Hidden value Property
    </title>
</head>  

<body style="text-align:center;">

    <h1 style="color:green;">
        GeeksForGeeks 
    </h1>
    
    <h2>DOM Input Hidden value Property</h2>

    <input type="hidden" id="GFG" value="GeeksForGeeks">
    
    <button onclick="myGeeks()">
        Submit
    </button>
    
    <p id="sudo" style="color:green;font-size:20px;"></p>

    
    <!-- Script to set hidden property value -->
    <script>
        function myGeeks() {
            var x = document.getElementById("GFG").value
                    = "Sudo Placement";
            document.getElementById("sudo").innerHTML
                    = "The value of the value attribute"
                    + " have changed to " + x;
        }
    </script>
</body>

</html>