Hackathon get API data

Jquery_getAPI.js

function ($) {
    $('button').on('click', function () {
        // remove resultset if this has already been run
        $('.content ul').remove();
        // add spinner to indicate something is happening
        $('<i class="fa fa-refresh fa-spin"/>').appendTo('body');
 
        // get selected zip code from selectbox
        var zip = $('select option:selected').text().substring(1, 6);
 
        // make the AJAX request
        $.getJSON('http://data.colorado.gov/resource/4ykn-tg5h.json?entityStatus=Good%20Standing&principalZipCode=' + zip, function (data) {
 
            // do all this on success       
            var items = [],
                $ul;
 
            $.each(data, function (key, val) {
                //iterate through the returned data and build a list
                items.push('<li id="' + key + '"><span class="name">' + val.entityname + '</span><br><span class="addr">' + val.principaladdress1 + '</span> <span class="city">' + val.principalcity + '</span></li>');
            });
            // if no items were returned then add a message to that effect
            if (items.length < 1) {
                items.push('<li>No results for this ZIP code, try again!</li>');
            }
 
            // remove spinner
            $('.fa-spin').remove();
 
            // append list to page
            $ul = $('<ul />').appendTo('.content');
 
            //append list items to list
            $ul.append(items);
        });
    });
}(jQuery));