JavaScript Typeahead Autocomplete match accents and tildes Issue

http://stackoverflow.com/questions/22750760/javascript-typeahead-autocomplete-match-accents-and-tildes-issue#comment34679850_22750760

by Ben Smith

HTML

<script src="http://twitter.github.io/typeahead.js/releases/latest/typeahead.bundle.js"></script>
<input id="search" class="typeahead" type="text"></input>

CSS

@font-face {
    font-family:"Prociono";
    src: url("../font/Prociono-Regular-webfont.ttf");
}
html {
    overflow-y: scroll;
}
.container {
    margin: 0 auto;
    max-width: 750px;
    text-align: center;
}
.tt-dropdown-menu, .gist {
    text-align: left;
}
html {
    color: #333333;
    font-family:"Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 18px;
    line-height: 1.2;
}
.title, .example-name {
    font-family: Prociono;
}
p {
    margin: 0 0 10px;
}
.title {
    font-size: 64px;
    margin: 20px 0 0;
}
.example {
    padding: 30px 0;
}
.example-name {
    font-size: 32px;
    margin: 20px 0;
}
.demo {
    margin: 50px 0;
    position: relative;
}
.typeahead, .tt-query, .tt-hint {
    border: 2px solid #CCCCCC;
    border-radius: 8px 8px 8px 8px;
    font-size: 24px;
    height: 30px;
    line-height: 30px;
    outline: medium none;
    padding: 8px 12px;
    width: 396px;
}
.typeahead {
    background-color: #FFFFFF;
}
.typeahead:focus {
    border: 2px solid #0097CF;
}
.tt-query {
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.075) inset;
}
.tt-hint {
    color: #999999;
}
.tt-dropdown-menu {
    background-color: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 8px 8px 8px 8px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
    margin-top: 12px;
    padding: 8px 0;
    width: 422px;
}
.tt-suggestion {
    font-size: 18px;
    line-height: 24px;
    padding: 3px 20px;
}
.tt-suggestion.tt-cursor {
    background-color: #0097CF;
    color: #FFFFFF;
}
.tt-suggestion p {
    margin: 0;
}
.gist {
    font-size: 14px;
}
.example-twitter-oss .tt-suggestion {
    padding: 8px 20px;
}
.example-twitter-oss .tt-suggestion + .tt-suggestion {
    border-top: 1px solid #CCCCCC;
}
.example-twitter-oss .repo-language {
    float: right;
    font-style: italic;
}
.example-twitter-oss .repo-name {
    font-weight: bold;
}
.example-twitter-oss .repo-description {
    font-size: 14px;
}
.example-sports .league-name {
    border-bottom: 1px...

JavaScript

var charMap = {
    "à": "a",
    "á": "a",
    "â": "a",
    "é": "e",
    "è": "e",
    "ê": "e",
    "ë": "e",
    "É": "e",
    "ï": "i",
    "î": "i",
    "ô": "o",
    "ö": "o",
    "û": "u",
    "ù": "u",
    "ü": "u",
    "ñ": "n"    
};

var names = ["Sánchez", "Árbol", "Müller", "Ératio", "Niño"];

var normalize = function (input) {
    $.each(charMap, function (unnormalizedChar, normalizedChar) {
        var regex = new RegExp(unnormalizedChar, 'gi');
        input = input.replace(regex, normalizedChar);
    });
    return input;
};

var queryTokenizer = function (q) {
    var normalized = normalize(q);
    return Bloodhound.tokenizers.whitespace(normalized);
};

var nombres = new Bloodhound({
    datumTokenizer: Bloodhound.tokenizers.obj.whitespace('value'),
    queryTokenizer: queryTokenizer,
    local: $.map(names, function (name) {
        // Normalize the name - use this for searching
        var normalized = normalize(name);
        return {
            value: normalized,
            // Include the original name - use this for display purposes
            displayValue: name
        };
    })
});

nombres.initialize();

$('#search').typeahead({
    minLength: 1,
    hint: false,
    highlight: true
}, {
    displayKey: 'displayValue',
    source: nombres.ttAdapter()
});