JSFiddle - React, Tailwind, and code Playground

HTML

<select onchange="showSelected();" id="ownerSelector">
    <option></option>
    <option selected value="11">1z</option>
    <option value="22">2z</option>
    <option value="32">3z</option>
</select>

JavaScript

window.showSelected = function () {
    YUI().use("selector-css3", "node", function (Y) {
        alert(Y.one("#ownerSelector").get("options"));
    });
};
showSelected();