<!DOCTYPE html>
<html lang="en-US">
<body>
<p>The internal clock in JavaScript starts at 1 January 1970 00:00:00 UTC.</p>
<p>Click the button to display the number of milliseconds from 1 January 1970 00:00:00 to current date.</p>
<button onclick="myFunction()">Diplay Milliseconds</button>
<p id="point"></p>
<script>
function myFunction() {
var d = Date.now();
document.getElementById("point").innerHTML = d;
}
</script> </body>
</html>