doc/themes/weex/layout/_partial/post/summary.ejs

<% var result = page.path.match(/(v-)(\d+(\.\d+))/) %>
<% var version = result ? +result[2] : 2.1 %>

<div class="doc-nav-version">
  <select class="versionBtn" stype="<%- url_for_lang(page.type) %>">
  <% if (version == 2.1) { %>
    <option value="2v" selected>v2.x</option>
    <option value="1v">v1.x</option>
  <% } else { %>
    <option value="2v">v2.x</option>
    <option value="1v" selected>v1.x</option>
  <% } %>
 </select>
</div>
<div class="summary">
  <h2 class="part-title">
    <% if (type) { %>
      <%= _p('menu.' + type) %>
    <% } %>
  </h2>
  <ul class="doc-summary">
    <% var pagesArr = site.pages.find({type: type, lang: page.lang, version: version}).sort('order') %>
    <% var pages = [] %>
    <% pagesArr.each(function (item) { %>
      <% var i = Math.floor(item.order) - 1 %>
      <% if(pages[i]) { %>
        <% pages[i].push(item) %>
      <% } else { %>
        <% pages[i] = [];pages[i].push(item) %>
      <% } %>
    <% }) %>
   
    <% pages.forEach(function (item, index) { %>
      <li>
        <h3 class="chapter-title"><a href="<%= url_for(item[0].path) %>" class="sidebar-link <%- is_current(item[0].path, 'strict') ? 'current' : '' %> <%- item[0].is_new ? 'new' : '' %>"><%- item[0].title %></a></h3>
        <% if (item.length > 1) { %>
          <ul class="chapter">
            <% for (var i = 1; i < item.length; i++) { %>
              <li>
                <a href="<%= url_for(item[i].path) %>" class="sidebar-link <%- is_current(item[i].path, 'strict') ? 'current' : '' %> <%- item[i].is_new ? 'new' : '' %>"><%= item[i].title %></a>
              </li>
            <% } %>
          </ul>
        <% } %>
      </li>
    <% }) %>
    
  </ul>
</div>
<div class="hostbyaliyun">
  <a href="https://render.alipay.com/p/s/taobaonpm_click/weex_banner_click">
    <img src="https://render.alipay.com/p/s/taobaonpm_click/weex_banner" alt="" width="180px">
  </a>
  <div style="color: #7f8c8d;font-size: 12px;">阿里云赞助</div>
</div>