StackOverflow Date parse

Return date from validated string of form YYYYMMDD

HTML

<a href="http://stackoverflow.com/questions/10638529/how-to-parse-a-date-in-format-yyyymmdd-in-javascript#10638617">How to parse a date in format “YYYYmmdd” in JavaScript?</a><br/>

JavaScript

function yyyymmdd() {
    function twoDigit(n) { return (n < 10 ? '0' : '') + n; }

    var now = new Date();
    return '' + now.getFullYear() + twoDigit(now.getMonth() + 1) + twoDigit(now.getDate());
}

 document.write (yyyymmdd());