Blogger的JS函数代码如何调整缩略图的默认分辨率？

Question

如何在下面的代码中调整缩略图的默认分辨率？使用此代码，我在我的网站上获得了非常低质量的图像。那么，如何使用此代码提高图像质量？

function getPosts(json) {
  var posts = "<ul class=mbtlist>";
  for (var i = 0; i < json.feed.entry.length; i++) {
    var title = json.feed.entry[i].title.$t;
    var url = json.feed.entry[i].link.pop().href;
    var thumbnail = json.feed.entry[i].media$thumbnail.url;
    posts += "<li>" + 
               "<a class='mbttitle' href='" + url + "'>" + 
                 "<img src='" + thumbnail + "'>" + 
                  title + 
               "</a>" + 
             "</li >";
  }
  posts += '</ul>';
  document.getElementById('container').innerHTML = posts;
}

<div id="container"></div>
<script src="https://www.sebahotnews.org/feeds/posts/default/-/জাতীয়?max-results=4&alt=json&callback=getPosts"></script>

Answer 1

<script>
function getPosts(json) {
    var posts = "<ul class=mbtlist>";
    for (var i = 0; i < json.feed.entry.length; i++) {
        var title = json.feed.entry[i].title.$t;
        var url = json.feed.entry[i].link.pop().href;
        if (json.feed.entry[i].media$thumbnail){thumbUrl = json.feed.entry[i].media$thumbnail.url;thumbnail= thumbUrl.replace("/s72-c/","/s"+400+"/");}

posts += "<li><a class='mbttitle' href='" + url + "'><img src='" + thumbnail + "'>" + title + "</a></li>";
    }
   posts+='</ul>';
    document.getElementById('container').innerHTML = posts;
}
</script>

Blogger的JS函数代码如何调整缩略图的默认分辨率？

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