hexo-theme-stellar/layout/_partial/widgets/toc.ejs

<%
const proj = theme.wiki.tree[page.wiki]
var hasTOC = true
function layoutTocBody() {
  if (toc(page.content).length > 0) {
    hasTOC = true
    return toc(page.content, {
      list_number: item.list_number,
      min_depth: item.min_depth,
      max_depth: item.max_depth
    });
  }
  hasTOC = false
  return ''
}

function layoutTocHeader(title) {
  var el = ''
  el += `<div class="widget-header dis-select">`
  el += `<span class="name">${title || __("meta.toc")}</span>`
  el += `</div>`
  return el
}

function layoutDocTree(pages) {
  var el = ''
  for (let p of pages) {
    if (p.title == null || p.title.length == 0) {
      continue
    }
    let isActive = ''
    if (p.path === page.path) {
      isActive += ' active'
    }
    el += `<div class="doc-tree${isActive}">`
    if (proj.pages.length > 1) {
      let href = url_for(p.path);
      if (p.is_homepage) {
        href += '#start'
      }
      el += `<a class="doc-tree-link${isActive}" href="${href}">`
      el += `<span class="toc-text">${p.title}</span>`
      if (isActive.length > 0) {
        el += icon('default:bookmark.active')
      }
      el += `</a>`
    }
    if (p.path === page.path) {
      el += layoutTocBody()
    }
    el += `</div>`
  }
  return el
}


function layoutDiv(fallback) {
  var type = ''
  if (proj?.pages) {
    type = proj.pages.length > 1 ? 'multi' : 'single'
  } else {
    let toc_content = toc(page.content)
    if (toc_content && toc_content.length > 0) {
      type = 'single'
    }
  }

  var el = ''
  if (type.length > 0) {
    el += `<widget class="widget-wrapper${scrollreveal(' ')} toc ${type}" id="data-toc" collapse="${item.collapse}">`
    if (proj) {
      // wiki 布局
      if (proj.sections && proj.sections.length > 0 && proj.pages.length > 1) { // 多 pages
        for (let sec of proj.sections) {
          if (sec.pages.length == 0) {
            continue
          }
          if (sec.title?.length > 0) {
            el += layoutTocHeader(sec.title)
          }
          el += `<div class="widget-body fs14">`
          el += layoutDocTree(sec.pages)
          el += `</div>`
        }
      } else { // 单 page
        if (proj.pages.length == 1) {
          el += layoutTocHeader()
        }
        el += `<div class="widget-body fs14">`
        el += layoutDocTree(proj.pages)
        el += `</div>`
        if (hasTOC == false) {
          return ''
        }
      }
    } else {
      // post 布局
      el += layoutTocHeader()
      el += `<div class="widget-body fs14">`
      el += `<div class="doc-tree active">`
      el += layoutTocBody()
      el += `</div>`
      el += `</div>`
      if (hasTOC == false) {
        return ''
      }
    } 
    el += `</widget>`
  } else if (item.fallback) {
    const fallback = theme.widgets[item.fallback]
    el += partial(fallback.layout, {item: fallback})
  }
  return el
}

%>

<%- layoutDiv() %>