JavaScript: how to add CSS style tag with settings to DOM

Native JS

oStyleAppend = function (content) {
    oStyle = document.createElement('STYLE');
    oStyle.type = 'text/css';
    oStyle.appendChild(document.createTextNode(content));
    document.head.appendChild(oStyle);
}

oStyleAppend('.example {height: 100px;}');

jquery

$('<style>').text('.example {height: 100px;}').appendTo(document.head);