bootstrap4 select / typehead

by beaver71

HTML

<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/corejs-typeahead/1.2.1/typeahead.jquery.min.js"></script>
<div class="container">
  <form>
  
    <div class="form-group">
      <label for="city">City</label>
      <input class="form-control" name="city" id="city" />
    </div>

    <div class="form-group">
      <label for="address">Address</label>
      <input class="form-control" name="address" id="address" />
    </div>
    
    <div id="state" class="form-group">
      <label for="state">State (twitter typeahead)</label>
      <input class="typeahead form-control" name="state" type="text" placeholder="States of USA">
    </div>

    <div class="form-group">
      <label for="bs">State (Bootstrap 4)</label>
      <select id="my_select" class="form-control">
            <option selected>Select</option>
            <option value="1">Alabama</option>
            <option value="2">Alaska</option>
            <option value="3">Arizona</option>
       </select>
    </div>

    
  </form>
<div>

CSS

/* -----typeahead------ */

.twitter-typeahead {
  display: block !important;
}

.tt-query {
  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
}

.tt-hint {
  color: #999
}

.tt-menu {
  width: 100%;
  margin: 1px 0;
  padding: 1px 0;
  background-color: #fff;
  border: 1px solid #ccc;
  border: 1px solid rgba(0, 0, 0, 0.2);
  -webkit-border-radius: 1px;
  -moz-border-radius: 1px;
  border-radius: 1px;
  -webkit-box-shadow: 0 5px 10px rgba(0, 0, 0, .2);
  -moz-box-shadow: 0 5px 10px rgba(0, 0, 0, .2);
  box-shadow: 0 5px 10px rgba(0, 0, 0, .2);
}

.tt-suggestion {
  padding: 3px 20px;
  font-size: 18px;
  line-height: 24px;
}

.tt-suggestion:hover {
  cursor: pointer;
  color: #fff;
  background-color: #0097cf;
}

.tt-suggestion.tt-cursor {
  color: #fff;
  background-color: #0097cf;
}

.tt-suggestion p {
  margin: 0;
}

JavaScript

var substringMatcher = function(strs) {
  return function findMatches(q, cb) {
    var matches, substringRegex;

    // an array that will be populated with substring matches
    matches = [];

    // regex used to determine if a string contains the substring `q`
    substrRegex = new RegExp(q, 'i');

    // iterate through the pool of strings and for any string that
    // contains the substring `q`, add it to the `matches` array
    $.each(strs, function(i, str) {
      if (substrRegex.test(str)) {
        matches.push(str);
      }
    });

    cb(matches);
  };
};

  var states = ['Alabama', 'Alaska', 'Arizona', 'Arkansas', 'California',
    'Colorado', 'Connecticut', 'Delaware', 'Florida', 'Georgia', 'Hawaii',
    'Idaho', 'Illinois', 'Indiana', 'Iowa', 'Kansas', 'Kentucky', 'Louisiana',
    'Maine', 'Maryland', 'Massachusetts', 'Michigan', 'Minnesota',
    'Mississippi', 'Missouri', 'Montana', 'Nebraska', 'Nevada', 'New Hampshire',
    'New Jersey', 'New Mexico', 'New York', 'North Carolina', 'North Dakota',
    'Ohio', 'Oklahoma', 'Oregon', 'Pennsylvania', 'Rhode Island',
    'South Carolina', 'South Dakota', 'Tennessee', 'Texas', 'Utah', 'Vermont',
    'Virginia', 'Washington', 'West Virginia', 'Wisconsin', 'Wyoming'
  ];


  $('#state .typeahead').typeahead({
    hint: true,
    highlight: false,
    minLength: 1
  }, {
    name: 'states',
    source: substringMatcher(states)
  });