javascript - 在页面上列出博主帖子，带有图像并使用 CSS 进行风格化

Question

下面的代码用于在标签名称中列出博客帖子但是它只列出了帖子的标题，我想知道是否可以将帖子图像一起显示，并使用 css 进行样式化，我该怎么做？在 /feeds/posts/summary/-/NAME?alt=json&callback=processPostList12&start-index=" 中，您可以更改标签名称，并且只会显示与标签名称关联的帖子。

我更改了创建类的代码并将图像的位置更改为行的开头，但现在它不再按字母顺序排列，我尝试了所有我知道的方法但无法修复它。图片是否也可以指向帖子？就像标题一样

这是我更改的部分:

          a1E.href = url;
          a1E.textContent = title;
          a1E.className += "aclass";
          postImage.src = imageThumb;
          postImage.className += "imclass";

---

  var startIndex = 1;
  var maxResults = 150;
  var allResults = [];
  function sendQuery12()
  {
    var scpt = document.createElement("script");
    scpt.src = "/feeds/posts/summary/-/Series?alt=json&callback=processPostList13&start-index=" + startIndex + "&max-results=" + maxResults;
    document.body.appendChild(scpt);
  }
  function printArrayResults(root)
  { 
    //Sort Alphebetically
    allResults.sort(function(a, b){
      var a_string = a.children[0].textContent ;
      var b_string = b.children[0].textContent ;
      if(a_string < b_string) return -1;
      if(a_string > b_string) return 1;
      return 0;
    })
    var elmt = document.getElementById("postList13");
    for (index = 0; index < allResults.length; index++) {
      elmt.appendChild(allResults[index]);
    }
  }
  function processPostList13(root)
  {   
    var elmt = document.getElementById("postList13");
    if (!elmt)
      return;
    var feed = root.feed;
    if (feed.entry.length > 0)
    {
      for (var i = 0; i < feed.entry.length; i++)
      {
        var entry = feed.entry[i];
        var title = entry.title.$t;
        var date = entry.published.$t;

        if( entry.media$thumbnail != undefined ){
          var imageThumb = entry.media$thumbnail.url ;
        } else {
          var imageThumb = 'https://i.imgur.com/PqPqZQN.jpg' ;
        }

        for (var j = 0; j < entry.link.length; j++)
        {
          if (entry.link[j].rel == "alternate")
          {
            var url = entry.link[j].href;
            if (url && url.length > 0 && title && title.length > 0)
            {
              var liE = document.createElement("li");
              var a1E = document.createElement("a");
              var postImage = document.createElement("img");

              a1E.href = url;
              a1E.textContent = title;
              a1E.className += "aclass";
              postImage.src = imageThumb;
              postImage.className += "imclass";

              liE.appendChild(postImage);
              liE.appendChild(a1E);



              //elmt.appendChild(liE);
              allResults.push(liE);

            }
            break;
          }
        }
      }
      if (feed.entry.length >= maxResults)
      {
        startIndex += maxResults;
        sendQuery12();
      } else {
        printArrayResults();
      }
    }
  }
  sendQuery12();

<div class="postlist1" id="postList13">
</div>

Answer 1

1- 从 API 检索帖子图片

在这些行之后:

var entry = feed.entry[i];
var title = entry.title.$t;
var date  = entry.published.$t;

你可以使用:

var imageThumb = entry.media$thumbnail.url;

它将检索帖子的第一个图像缩略图。你应该验证它，因为没有图像的帖子将为 media$thumbnail 返回 undefined 并会导致 javascript 错误。所以:

if( entry.media$thumbnail != undefined ){
    var imageThumb = entry.media$thumbnail.url;
} else {
    var imageThumb = 'alternative_image_path' ;
}

2- 附加帖子图片:

...
var postImage= document.createElement("img");
postImage.src = imageThumb;
liE.appendChild(postImage);
...

最终代码应该是这样的:

<div>
  <ul id="postList12"></ul>
</div>
<script type="text/javascript">
  var startIndex = 1;
  var maxResults = 150;
  var allResults = [];
  function sendQuery12()
  {
    var scpt = document.createElement("script");
    scpt.src = "/feeds/posts/summary/-/NAME?alt=json&callback=processPostList12&start-index=" + startIndex + "&max-results=" + maxResults;
    document.body.appendChild(scpt);
  }
  function printArrayResults(root)
  { 
    //Sort Alphebetically
    allResults.sort(function(a, b){
      var a_string = a.children[0].textContent ;
      var b_string = b.children[0].textContent ;
      if(a_string < b_string) return -1;
      if(a_string > b_string) return 1;
      return 0;
    })
    var elmt = document.getElementById("postList12");
    for (index = 0; index < allResults.length; index++) {
      elmt.appendChild(allResults[index]);
    }
  }
  function processPostList12(root)
  {   
    var elmt = document.getElementById("postList12");
    if (!elmt)
      return;
    var feed = root.feed;
    if (feed.entry.length > 0)
    {
      for (var i = 0; i < feed.entry.length; i++)
      {
        var entry = feed.entry[i];
        var title = entry.title.$t;
        var date = entry.published.$t;

        if( entry.media$thumbnail != undefined ){
          var imageThumb = entry.media$thumbnail.url ;
        } else {
          var imageThumb = 'https://i.imgur.com/PqPqZQN.jpg' ;
        }

        for (var j = 0; j < entry.link.length; j++)
        {
          if (entry.link[j].rel == "alternate")
          {
            var url = entry.link[j].href;
            if (url && url.length > 0 && title && title.length > 0)
            {
              var liE = document.createElement("li");
              var a1E = document.createElement("a");
              var postImage = document.createElement("img");

              a1E.href = url;
              a1E.textContent = title;
              postImage.src = imageThumb;

              liE.appendChild(a1E);
              liE.appendChild(postImage);

              //elmt.appendChild(liE);
              allResults.push(liE);

            }
            break;
          }
        }
      }
      if (feed.entry.length >= maxResults)
      {
        startIndex += maxResults;
        sendQuery12();
      } else {
        printArrayResults();
      }
    }
  }
  sendQuery12();
</script>