SO Question

http://stackoverflow.com/questions/7373058

by Kaleb Hornsby

HTML

<script src="https://www.polymer-project.org/1.0/components/webcomponentsjs/webcomponents-lite.min.js"></script>
<link rel="import" href="https://rawgit.com/Polymer/polymer/v1.0.3/polymer.html" />
<template id="app" is="dom-bind">
    <select value="{{ val }}">
        <option value="1">Cat</option>
        <option value="2">Dog</option>
        <option value="3">Fish</option>
    </select>
</template>

JavaScript

window.addEventListener('WebComponentsReady', function(e) {
    app.val = 3;
});