<html>
<body>
<p id="demo">Click the button to display a date after changing the year, month, and day.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction()
{
var d = new Date();
d.setFullYear(2020,10,3);
var x = document.getElementById("demo");
x.innerHTML=d;
}
</script>
<p>Remember that JavaScript counts months from 0 to 11.
Month 10 is November.</p>
</body>
</html>