Demo - javascript-get-hidden-field-value-by-id-by-name

Edit This Code :

<html>
<body>
    <form>
        <input type=hidden id="myHiddenInputId" name="myHiddenInputName" value="Welcome to codepedia" />
        <input type=button value="Get Hidden Value by Id" onclick="fnById()" />
        <input type=button value="Get Hidden Value by Name" onclick="fnByName()" />
    </form>
    <script>
        function fnById() {
            alert(document.getElementById("myHiddenInputId").value);
        }

        function fnByName() {
            alert(document.getElementsByName("myHiddenInputName")[0].value);
        }
    </script>
</body>
</html>

Result :