e=&quot;checkbox&quot; ng-model=&quot;checked&quot; required&#10;      aria-label=&quot;Custom checkbox&quot; show-attrs&gt;&#10;    Custom checkbox&#10;  &lt;/custom-checkbox&gt;&#10;&lt;/form&gt;&#10;&lt;hr /&gt;&#10;&lt;b&gt;Is checked:&lt;/b&gt; {{ !!checked }}</code></pre>
    </div>
  
    <div class="runnable-example-file" 
      name="script.js"
      language="js"
      type="js">
      <pre><code>angular.&#10;  module(&#39;ngAria_ngModelExample&#39;, [&#39;ngAria&#39;]).&#10;  directive(&#39;custo