Javascript Data Type How to - Calculate the days between two dates

Question

We would like to know how to calculate the days between two dates.

Answer


<html>
<body>
    <p id="dateField"></p>
    <!-- w  w w.ja  v a  2 s .co  m-->
    <script type = "text/javascript">
    var today = new Date();
    var then = new Date();

    then.setFullYear(3000,1,1);
    
    var diff = then.getTime() - today.getTime();
    
    diff = Math.floor(diff / (1000 * 60 * 60 * 24));
    
    var dateLoc = document.getElementById("dateField");
    dateLoc.innerHTML = diff + " days";
    </script>
</body>
</html>

The code above is rendered as follows: