title: Polymer option selected
body: <p>How do I set select option selected in Polymer 1.0?</p>
  
  <pre><code>&lt;select id="typeSelect" style="width:100%;" value="{{item.type::change}}"&gt;
    &lt;option value=""&gt;Choose a type&lt;/option&gt;
    &lt;template is="dom-repeat" items="{{types}}" as="type" &gt;
      &lt;option selected?="{{type==item.type}}"&gt;{{type}}&lt;/option&gt;
    &lt;/template&gt;
  &lt;/select&gt;
  </code></pre>