autocomplete search function

search_form.js

var keys = [8,
    46,
    48,
    49,
    50,
    51,
    52,
    53,
    54,
    55,
    56,
    57,
    65,
    66,
    67,
    68,
    69,
    70,
    71,
    72,
    73,
    74,
    75,
    76,
    77,
    78,
    79,
    80,
    81,
    82,
    83,
    84,
    85,
    86,
    87,
    88,
    89,
    90,
    96,
    97,
    98,
    99,
    100,
    101,
    102,
    103,
    104,
    105,
    106,
    107,
    109,
    110,
    111,
    186,
    187,
    188,
    189,
    190,
    191,
    192,
    219,
    220,
    221,
    222
];
$('#q').off().on({
    keyup: function (e) {
        if (keys.indexOf(e.which) > -1) {
            // can be resource intensive in which case _.debounce should be used as part of this solution 
            Rails.fire($('#qForm')[0], 'submit');
        }
    }
});