<!DOCTYPE html>
<html>
<body>
Name: <input type="text" id="myText" value="Mickey">
<p>Click the button to display the default value of the text field.</p>
<button type="button" onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myText").defaultValue;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>