修改主题文件支持侧边栏目录

simple主题整体还行，但文章无侧边栏目录，一般写的技术性文章很长，就需要侧边栏目录和这个功能了，在网上搜了一下资料，对于前端小学生的我费了好长时间才搞定，记录一下过程。

1、修改post.ejs文件

head新增

<script src="https://cdn.bootcss.com/highlight.js/9.12.0/highlight.min.js"></script>

搜索<%- post.content %>复制一下代码覆盖copy

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<div class="post-content-wrapper">
  <div class="post-content" v-pre>
    <%- post.content %>
  </div>
  <div class="toc-container">
   <%- post.toc %>
 </div>
</div>

新增高亮js

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<script>
      hljs.initHighlightingOnLoad()

      let mainNavLinks = document.querySelectorAll(".markdownIt-TOC a");

      // This should probably be throttled.
      // Especially because it triggers during smooth scrolling.
      // https://lodash.com/docs/4.17.10#throttle
      // You could do like...
      // window.addEventListener("scroll", () => {
      //    _.throttle(doThatStuff, 100);
      // });
      // Only not doing it here to keep this Pen dependency-free.

      window.addEventListener("scroll", event => {
        let fromTop = window.scrollY;

        mainNavLinks.forEach((link, index) => {
          let section = document.getElementById(decodeURI(link.hash).substring(1));
          let nextSection = null
          if (mainNavLinks[index + 1]) {
            nextSection = document.getElementById(decodeURI(mainNavLinks[index + 1].hash).substring(1));
          }
          if (section.offsetTop <= fromTop) {
            if (nextSection) {
              if (nextSection.offsetTop > fromTop) {
                link.classList.add("current");
              } else {
                link.classList.remove("current");    
              }
            } else {
              link.classList.add("current");
            }
          } else {
            link.classList.remove("current");
          }
        });
      });

    </script>

2、客户端新增自定义css

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.toc-container  .markdownIt-TOC {
    position: sticky;
    top: 32px;
    width: 200px;
    font-size: 12px;
    list-style: none;
    padding-left: 0;
    padding: 16px 8px;
 }
.toc-container  .markdownIt-TOC:before {
      content: "";
      position: absolute;
      top: 0;
      left: 8px;
      bottom: 0;
      width: 1px;
      background-color: #ebedef;
      opacity: .5;
  }
.toc-container  ul {
    list-style: none;
  }
.toc-container  li {
    padding-left: 16px;
}
.toc-container  li a {
      color: #868e96;
      padding: 4px;
      display: block;
      transition: all 0.3s;
  }
.toc-container  li a:hover {
        background: #cddbef;
      }
.toc-container  li a.current {
        color: #006CFF;
        background: #fafafa;
  }
.post-content-wrapper {
display: flex;
}
.post-content {
width: 100%;
margin-right: 20px;
}
@media (max-width: 1150px) {
  .toc-container {
    display: none;
  }
}

3、修改main.css文件

搜索.post-detail 修改margin: 0 auto;为

margin: 0 20px;

重新渲染网页即可尽情享用吧！