Demo of showing time on a button

Click to show time

HTML

<button type='button' class='btn btn-success btn-lg' id=b1>Click to show time</button>

JQuery

<script>
$(document).ready(function() {
//////////////////////////
my_function=function my_function(){
$('#b1').load("clock-timer-server.php")
}
////////////
$('#b1').click(function(){
my_function();
})
/////////////
})
</script>

PHP : clock-timer-server.php

<?Php
echo date("d/m/y : H:i:s", time());
?>