hexo-theme-volantis/layout/_partial/meta.ejs

<% if(is_home() || is_category() || is_archive() || is_tag() || page.index) {
  var isPostList = true;
} else {
  var isPostList = false;
}
var topMetas = (theme.meta && theme.meta.header) || [];
if (post.meta && (post.meta.header !== undefined && post.meta.header !== null)) {
  if (post.meta.header.length) {
    topMetas = post.meta.header;
  } else {
    topMetas = [];
  }
}
var bottomMetas = (theme.meta && theme.meta.footer) || [];
if (post.meta && (post.meta.footer !== undefined && post.meta.footer !== null)) {
  if (post.meta.footer.length) {
    bottomMetas = post.meta.footer;
  } else {
    bottomMetas = [];
  }
}
%>

<% if (position == 'header') { %>
  <section class='meta'>
    <% if (post.music && post.music.enable != false) { %>
      <%- partial('../_third-party/aplayer',
      {aplayer_theme: '', aplayer_mini: true, aplayer_mode: 'circulation',
      aplayer_server: post.music.server, aplayer_type: post.music.type, aplayer_id: post.music.id,
      aplayer_volume: post.music.volume?post.music.volume:'0.7', aplayer_autoplay: post.music.autoplay?true:false }) %>
    <% } %>
    <% if(post.thumbnail && post.thumbnail.length){ %>
      <a title='<%- post.title %>' href='<%- url_for(post.path) %>'><img class='thumbnail' src='<%- post.thumbnail %>'></a>
    <% } %>
    <div class="meta" id="header-meta">
      <% if((topMetas).indexOf('title') > -1){ %>
        <%- partial('../_meta/' + 'title', {post: post, isPostList: isPostList}) %>
      <% } %>
      <div class='new-meta-box'>
        <% (topMetas).forEach(function(meta){ %>
          <% if(meta != 'title'){ %>
            <%- partial('../_meta/' + meta, {post: post, isPostList: isPostList}) %>
          <% } %>
        <% }) %>
      </div>
      <% if ((topMetas).length > 0){ %>
        <hr>
      <% } %>
    </div>
  </section>
<% } else if (position == 'footer') { %>
  <section class='meta' id="footer-meta">
    <hr>
    <div class='new-meta-box'>
      <% (bottomMetas).forEach(function(meta){ %>
        <% if(meta != 'title'){ %>
          <%- partial('../_meta/' + meta, {post: post, isPostList: isPostList}) %>
        <% } %>
      <% }) %>
    </div>
  </section>
<% } %>