TYPEAHEAD.JS - Substring Matching

HTML

<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<script src="http://twitter.github.com/typeahead.js/releases/latest/typeahead.jquery.js"></script>
<!-- Latest compiled and minified JavaScript -->
<script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<body>
    <div class="container">
        <label>State</label>
        <input type="text" class="typeahead form-control" />
    </div>
</body>

CSS

body {
    padding: 40px;
}
.twitter-typeahead .tt-query, .twitter-typeahead .tt-hint {
    margin-bottom: 0;
}
.twitter-typeahead .tt-hint {
    display: block;
    height: 34px;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.428571429;
    border: 1px solid transparent;
    border-radius:4px;
}
.twitter-typeahead .hint-small {
    height: 30px;
    padding: 5px 10px;
    font-size: 12px;
    border-radius: 3px;
    line-height: 1.5;
}
.twitter-typeahead .hint-large {
    height: 45px;
    padding: 10px 16px;
    font-size: 18px;
    border-radius: 6px;
    line-height: 1.33;
}
.tt-dropdown-menu {
    min-width: 160px;
    margin-top: 2px;
    padding: 5px 0;
    background-color: #fff;
    border: 1px solid #ccc;
    border: 1px solid rgba(0, 0, 0, .2);
    *border-right-width: 2px;
    *border-bottom-width: 2px;
    -webkit-border-radius: 6px;
    -moz-border-radius: 6px;
    border-radius: 6px;
    -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);
    -webkit-background-clip: padding-box;
    -moz-background-clip: padding;
    background-clip: padding-box;
}
.tt-suggestion {
    display: block;
    padding: 3px 20px;
}
.tt-suggestion.tt-is-under-cursor {
    color: #fff;
    background-color: #0081c2;
    background-image: -moz-linear-gradient(top, #0088cc, #0077b3);
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#0088cc), to(#0077b3));
    background-image: -webkit-linear-gradient(top, #0088cc, #0077b3);
    background-image: -o-linear-gradient(top, #0088cc, #0077b3);
    background-image: linear-gradient(to bottom, #0088cc, #0077b3);
    background-repeat: repeat-x;
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff0088cc', endColorstr='#ff0077b3', GradientType=0)
}
.tt-suggestion.tt-is-under-cursor a {
    color: #fff;
}
.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)) {
                // the typeahead jQuery plugin expects suggestions to a
                // JavaScript object, refer to typeahead docs for more info
                matches.push({
                    value: 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'];

$('input.typeahead').typeahead({
    hint: true,
    highlight: true,
    minLength: 1
}, {
    name: 'states',
    displayKey: 'value',
    source: substringMatcher(states)
});
$('.typeahead.input-sm').siblings('input.tt-hint').addClass('hint-small');
$('.typeahead.input-lg').siblings('input.tt-hint').addClass('hint-large');