how to set time dynamically in js code example

Example: dynamic time javascript

<p id="GetCurrentDateCalendar"></p>

<script>
var Calendar = new Date();

var Currentmos   = Calendar.monthNames = ["January", "February", "March", "April", "May", "June",
  "July", "August", "September", "October", "November", "December"
];
var Currentdate  = Calendar.getDate();
var Currentyear  = Calendar.getFullYear();

document.getElementById("GetCurrentDateCalendar").innerHTML = 

Currentmos[Calendar.getMonth()] +' '+ Currentdate  +' '+ Currentyear;

</script>