<!DOCTYPE html>
<html>
<body>
A hidden input field: <input type="hidden" id="myInput" name="myname">
<p>Click the button to display the value of the name attribute of the hidden input field.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myInput").name;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>