How to Display Date Using Javascript?

This JavaScript code will display today date. 

<SCRIPT LANGUAGE="JavaScript">
    var now = new Date();

    var days = new Array('Sunday','Monday','Tuesday',
        'Wednesday','Thursday','Friday','Saturday');

    var months = new Array('January','February','March','April',
        'May','June','July','August','September',
        'October','November','December');

    var date = ((now.getDate()<10) ? "0" : "")+ now.getDate();

    function yearName(number)  {
        return (number < 1000) ? number + 1900 : number;
    }
    today =  days[now.getDay()] + ", " +
        months[now.getMonth()] + " " +
        date + ", " +
        (yearName(now.getYear())) ;

    document.write(today);
</script>

Result:

Thursday, January 25, 2016