JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="log"></ul>

JavaScript

var dateYouWant = 1363798981693; 
   Date.prototype.now = function() { 
   return dateYouWant;
};

log( Date.now() );

function log(msg){
    $('#log').append('<li>' + msg + '</li>');
}