按钮/链接显示博客中特定标签的随机帖子

Question

我在使用 Google 博客 CMS 构建的博客方面需要帮助：https://funatonce.blogspot.com

我目前正在使用以下脚本生成/显示随机帖子，该脚本从整个帖子条目中返回随机帖子。我想要一个类似的按钮来显示来自特定类别/标签的帖子，甚至混合类别/标签。

我的博客上有超过 5000 篇文章和 50 多个类别/标签，这就是为什么它对我的访问者来说非常有用的功能。

<script type='text/javascript'>
//<![CDATA[
function showLucky(root){
    var feed = root.feed;
    var entries = feed.entry || [];
    var entry = feed.entry[0];
      for (var j = 0; j < entry.link.length; ++j) {
       if (entry.link[j].rel == "alternate") {
       window.location = entry.link[j].href;
       }
      }
   }

function fetchLuck(luck){
    script = document.createElement('script');
    script.src = '/feeds/posts/summary?start-index='+luck+'&max-results=1&alt=json-in-script&callback=showLucky';
    script.type = 'text/javascript';
    document.getElementsByTagName('head')[0].appendChild(script);
   }
function readLucky(root){
    var feed = root.feed;
    var total = parseInt(feed.openSearch$totalResults.$t,10);
    var luckyNumber = Math.floor(Math.random()*total);
    luckyNumber++;
    fetchLuck(luckyNumber);
    }
function feelingLucky(){
    var script = document.createElement('script');
    script.type = 'text/javascript';
    script.src = '/feeds/posts/summary?max-results=0&alt=json-in-script&callback=readLucky';
    document.getElementsByTagName('head')[0].appendChild(script);
    }
//]]>
</script>

<a href="#random" onclick="feelingLucky()" title="Random Post">Feeling Lucky?</a>

Answer 1

要按标签获取帖子，请将/-/LabelName 添加到脚本 src，如下所示

<script type='text/javascript'>
//<![CDATA[
function showLucky(root){
    var feed = root.feed;
    var entries = feed.entry || [];
    var entry = feed.entry[0];
      for (var j = 0; j < entry.link.length; ++j) {
       if (entry.link[j].rel == "alternate") {
       window.location = entry.link[j].href;
       }
      }
   }

function fetchLuck(luck){
    script = document.createElement('script');
    script.src = '/feeds/posts/summary/-/LabelName?start-index='+luck+'&max-results=1&alt=json-in-script&callback=showLucky';
    script.type = 'text/javascript';
    document.getElementsByTagName('head')[0].appendChild(script);
   }
function readLucky(root){
    var feed = root.feed;
    var total = parseInt(feed.openSearch$totalResults.$t,10);
    var luckyNumber = Math.floor(Math.random()*total);
    luckyNumber++;
    fetchLuck(luckyNumber);
    }
function feelingLucky(){
    var script = document.createElement('script');
    script.type = 'text/javascript';
    script.src = '/feeds/posts/summary/-/LabelName?max-results=0&alt=json-in-script&callback=readLucky';
    document.getElementsByTagName('head')[0].appendChild(script);
    }
//]]>
</script>