二次創作についてあれやこれや

<div id="feed">
<ul></ul>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script type="text/javascript">
$(function() {

    //rssを読みたいサイトの「RSSへのurl」、「サイトurl 」、「サイト名」を記述
    var sitexmls = ['http://fuyutuki703.blog.fc2.com/?xml', 'http://saijoss.com/feed', 'http://www.loudist.jp/?feed=rss2'];
    var siteurls = ['http://fuyutuki703.blog.fc2.com', 'http://saijoss.com', 'http://www.loudist.jp']
    var sitenames = ['チラシの裏の読書感想文', '最上のSS感想', '青い鳥捕獲部'];

    //rss取得数
    var rssnum = 30;

    //1サイトの表示上限
    var limit = 5;

    var out = [];
    var xmls = '(';
    for(var i = 0; i < sitexmls.length; i++) {
        xmls = xmls + "'" + sitexmls[i] + "'";
        if (i < sitexmls.length - 1) {
            xmls = xmls + ',';
        }
    }
    xmls = xmls + ')';
    
    $.getJSON("https://query.yahooapis.com/v1/public/yql?callback=?", {
        q: `select * from rss(${rssnum}) where url in ${xmls}`,
        format: "json"
    }, function (json) {

        var count = new Array(siteurls.length);
        for (var i = 0; i < count.length; i++) {
           count[i] = 0;
        }

        for(var i in json.query.results.item){
            var entry = json.query.results.item[i];
            var link = entry.link;
            var title = entry.title;

            var pos = siteurls.indexOf(link.slice(0, link.indexOf('/', 7)));
            var name = sitenames[pos];
            
            count[pos]++;
            if(count[pos] < limit) {
               
               //RSS1.0と2.0の違いを吸収
               if(entry.pubDate) {
                   var date = new Date(entry.pubDate);
               } else {
                   var date = new Date(entry.date);
               }

               //日付取り出し
               var mm = ('0' + (date.getMonth() + 1)).slice(-2);
               var dd = ('0' + date.getDate()).slice(-2);
               var hh = ('0' + date.getHours()).slice(-2);
               var mi = ('0' + date.getMinutes()).slice(-2);
               var dispDate = mm + '/' + dd + ' ' + hh + ':' + mi;

               // newDate：NEW 扱いにする日数
               var newDate = 1;
               var dateNow = new Date();
               var checkDate =(dateNow - date) / (1000 * 24 * 3600);
               var dispNew = '';
               if(checkDate <= newDate) {
                   dispNew = '<strong>NEW!!</strong>';
               }

               var dispElm = '<li><a href="' + link + '" target="_blank">' + name + ' / '+ title + '</a>（' + dispDate + '）' + dispNew + '</li>';
               out.push([dispElm, date]);
            }
        }

        out = out.sort(function(a,b){return(a[1] < b[1] ? 1 : -1);});
        for (var i = 0; i < out.length; i++) {
            $("#feed ul").append(out[i][0]);
        }
    });
});
</script>