JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://datejs.googlecode.com/svn/trunk/build/date-en-US.js"></script>
Click here: <button id="doTime">Click Me</button>

JavaScript

$(function() {

    $('#doTime').click(function() {
        var startTime = Date.parse('11:01:57');
        var now = new Date;
        var difference = (now - startTime);
        if(difference/1000 > 300){
            alert("Difference greater than 5 minutes");
        }
        else{
            alert("Difference less than 5 minutes");
        }
    });

});