小编Joh*_*ohn的帖子

$('.form-control').textcomplete([{
  words: ['?????', '?????', 'english'],
  match: /(^|[^\w?-???])([\w?-??]{2,})$/i,
  search: function(term, callback) {
    callback($.map(this.words, function(word) {
      return word.indexOf(term) === 0 ? word : null;
    }));
  },
  index: 2,
  replace: function(word) {
    return '$1' + word + ' ';
  }
}]);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.textcomplete/1.8.4/jquery.textcomplete.min.js"></script>

<textarea class="form-control"></textarea>