[html] Twitter Bootstrap inline input with dropdown

Daniel Farrell's Bootstrap Combobox does the job perfectly. Here's an example from his GitHub repository.

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$(document).ready(function(){_x000D_
  $('.combobox').combobox();_x000D_
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  // bonus: add a placeholder_x000D_
  $('.combobox').attr('placeholder', 'For example, start typing "Pennsylvania"');_x000D_
});
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css">_x000D_
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-combobox/1.1.8/css/bootstrap-combobox.min.css">_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-combobox/1.1.8/js/bootstrap-combobox.min.js"></script>_x000D_
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<select class="combobox form-control">_x000D_
  <option></option>_x000D_
  <option value="PA">Pennsylvania</option>_x000D_
  <option value="CT">Connecticut</option>_x000D_
  <option value="NY">New York</option>_x000D_
  <option value="MD">Maryland</option>_x000D_
  <option value="VA">Virginia</option>_x000D_
</select>
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As an added bonus, I've included a placeholder in script since applying it to the markup does not hold.