javascript - you tube video embed

var YtIframe = (function() {
"use strict";
    var YtIframe = function (config) {
        config.https  = config.https  || false;
        config.width  = config.width  || 560;
        config.height = config.height || 315;
        config.cookie = (config.cookie === false) ? false : true;
        // build src attribute for iframe, create iframe element and populate it with attributes regarding the config options
        var videoSource = (false === config.https) ? 'http://' : 'https://';
        videoSource    += (false === config.cookie) ? 'www.youtube-nocookie.com/embed/' : 'www.youtube.com/embed/';
        videoSource    += (-1 === config.videoHash.indexOf('youtube')) ? config.videoHash : config.videoHash.split('v=')[1].split('&')[0];
        var iframe = document.createElement('iframe');
        iframe.setAttribute('width', parseInt(config.width, 10));
        iframe.setAttribute('height', parseInt(config.height, 10));
        iframe.setAttribute('src', videoSource);
        iframe.setAttribute('frameBorder', 0);
        iframe.setAttribute('allowFullScreen', '');
        return iframe;
    };
    return function (config) {
        // check if str or obj given, set default values if values are missing
        if ('undefined' == typeof config)
            return false;
        if ('string' == typeof config)
            config  = {videoHash: config};
        if ('object' == typeof config && !config.videoHash)
            return false;
        return new YtIframe(config);
    };
})();