Edit in JSFiddle

var iFrames = [{
    width: "560",
    height: "315",
    src: "//www.youtube.com/embed/rj6OLq9W6RE",
    frameborder: 0,
    allowfullscreen: true
}];

$div = $("div");

function Retorno() {
    $div.build(function (b) {
        b.table(function () {
            b.each(iFrames, function (idx, it) {
                b.tr(
                b.td(
                b.iframe({
                    width: it.width,
                    height: it.height,
                    src: it.src,
                    frameborder: it.frameborder,
                    allowfullscreen: it.allowfullscreen
                })));
            });
        });
    });
}

Retorno();
<div></div>
http://jsfiddle.net/Ridermansb/Hym5Z/#username

External resources loaded into this fiddle: