jquery deferrds

test_bad.js

$(function(){
    var $tweetDiv = $("#tweets>div");

    $('li').on('click',function(){

        cleanDiv();

        getTweets($(this).find('a').data('link'));

        $tweetDiv.fadeIn('slow');
    });

    var cleanDiv = function(){
        
        if($tweetDiv.children().length){
            $tweetDiv.children().remove();
        }

        $tweetDiv.fadeOut('slow');
    };

    var addTweets = function(tweets){
        console.log('add tweets');

        $.each(tweets,function(i,tweet){
            var $newElem = $('<div><span class="username"></span><span class="tweettext"></span></div>');

            $newElem.find("span.username")
                .html('<img src="' + tweet.profile_image_url_https + '">')
                .end()
                .find("span.tweettext")
                .html(tweet.text)
                .end()
                .appendTo($tweetDiv);
        });
    };

    var getTweets = function(searchURL){
        console.log('get tweets');
        $.ajax({
            url : searchURL,
            
            dataType : 'jsonp',

            success : function(data){
                //make sure what we got back valid data from twitter
                if(typeof data === 'object' && ! ('error' in data)){
                    addTweets(data.results);
                }
            },
            error : function(){
                //error
            }
        });
    };
});