hexo美化

/**
 * Butterfly
 * Related Posts
 * According the tag
 */

'use strict'

hexo.extend.helper.register('related_posts', function (currentPost, allPosts) {
  let relatedPosts = []
  currentPost.tags.forEach(function (tag) {
    allPosts.forEach(function (post) {
      if (isTagRelated(tag.name, post.tags)) {
        const relatedPost = {
          title: post.title,
          path: post.path,
          cover: post.cover,
          randomcover: post.randomcover,
          weight: 1,
          updated: post.updated,
          created: post.date,
          description: post.description,
          content: post.content
        }
        const index = findItem(relatedPosts, 'path', post.path)
        if (index !== -1) {
          relatedPosts[index].weight += 1
        } else {
          if (currentPost.path !== post.path) {
            relatedPosts.push(relatedPost)
          }
        }
      }
    })
  })
  if (relatedPosts.length === 0) {
    return ''
  }
  let result = ''
  const hexoConfig = hexo.config
  const config = hexo.theme.config

  const limitNum = config.related_post.limit || 6
  const dateType = config.related_post.date_type || 'created'
  const headlineLang = this._p('post.recommend')

  relatedPosts = relatedPosts.sort(compare('weight'))

  if (relatedPosts.length > 0) {
    result += '<div class="relatedPosts">'
    result += `<div class="headline"><i class="fas fa-thumbs-up fa-fw"></i><span>${headlineLang}</span></div>`
    result += '<div class="relatedPosts-list">'

    for (let i = 0; i < Math.min(relatedPosts.length, limitNum); i++) {
      const cover =
        relatedPosts[i].cover === false
          ? relatedPosts[i].randomcover
          : relatedPosts[i].cover
      const title = this.escape_html(relatedPosts[i].title)
      const description = this.strip_html(relatedPosts[i].description)
      const content = this.strip_html(relatedPosts[i].content)
      result += `<div><a href="${this.url_for(relatedPosts[i].path)}" title="${title}">`
      result += `<img class="cover" src="${this.url_for(cover)}" alt="cover">`
      if (dateType === 'created') {
        result += `<div class="content is-center"><div class="date"><i class="far fa-calendar-alt fa-fw"></i> ${this.date(relatedPosts[i].created, hexoConfig.date_format)}</div>`
      } else {
        result += `<div class="content is-center"><div class="date"><i class="fas fa-history fa-fw"></i> ${this.date(relatedPosts[i].updated, hexoConfig.date_format)}</div>`
      }
      result += `<div class="title">${title}</div>`
      switch (config.index_post_content.method) {
        case false:
          break
        case 1:
          result += `<div class="info">${description}</div>`
          break
        case 2:
          if (description) {
            result += `<div class="info">${description}</div>`
          }
		  else {
            let expert = content.substring(0, config.index_post_content.length)
            content.length > config.index_post_content.length ? expert += ' ...' : ''
            result += `<div class="info">${expert}</div>`
          }
		  break
        default:
          let expert = content.substring(0, config.index_post_content.length)
          content.length > config.index_post_content.length ? expert += ' ...' : ''
          result += `<div class="info">${expert}</div>`
          break
	  }
      result += '</div></a></div>'
	  }
    result += '</div></div>'
    return result
  }
})

function isTagRelated (tagName, TBDtags) {
  let result = false
  TBDtags.forEach(function (tag) {
    if (tagName === tag.name) {
      result = true
    }
  })
  return result
}

function findItem (arrayToSearch, attr, val) {
  for (let i = 0; i < arrayToSearch.length; i++) {
    if (arrayToSearch[i][attr] === val) {
      return i
    }
  }
  return -1
}

function compare (attr) {
  return function (a, b) {
    const val1 = a[attr]
    const val2 = b[attr]
    return val2 - val1
  }
}

文章中描述description为空是会发生报错

-
  var options = {
    prev_text: '<i class="fas fa-chevron-left fa-fw"></i><div class="pagination-prev">上页</div>',
    next_text: '<div class="pagination-next">下页</div><i class="fas fa-chevron-right fa-fw"></i>',
    mid_size: 1,
    escape: false
  }
if is_post()
  - let prev = theme.post_pagination === 1 ? page.prev : page.next
  - let next = theme.post_pagination === 1 ? page.next : page.prev
  nav#pagination.pagination-post
    if(prev)
      - var hasPageNext = next ? 'pull-left' : 'pull-full'
      .prev-post(class=hasPageNext)
        - var pagination_cover = prev.cover === false ? prev.randomcover : prev.cover
        a(href=url_for(prev.path))
          img.prev-cover(src=url_for(pagination_cover) onerror=`onerror=null;src='${url_for(theme.error_img.post_page)}'` alt='cover of previous post')
          .pagination-info
            .label=_p('pagination.prev')
            .prev_info=prev.title
            //- Display the article introduction on homepage
            case theme.index_post_content.method
              when false
                - break
              when 1
                .content!= prev.description
              when 2
                if prev.description
                  .content!= prev.description
                else
                  - const content = strip_html(prev.content)
                  - let expert = content.substring(0, theme.index_post_content.length) 
                  - content.length > theme.index_post_content.length ? expert += ' ...' : ''
                  .content!= expert
              default
                - const content = strip_html(prev.content)
                - let expert = content.substring(0, theme.index_post_content.length) 
                - content.length > theme.index_post_content.length ? expert += ' ...' : ''
                .content!= expert
          
    if(next)
      - var hasPagePrev = prev ? 'pull-right' : 'pull-full'
      - var pagination_cover = next.cover == false ? next.randomcover : next.cover
      .next-post(class=hasPagePrev)
        a(href=url_for(next.path))
          img.next-cover(src=url_for(pagination_cover) onerror=`onerror=null;src='${url_for(theme.error_img.post_page)}'` alt='cover of next post')
          .pagination-info
            .label=_p('pagination.next')
            .next_info=next.title
            //- Display the article introduction on homepage
            case theme.index_post_content.method
              when false
                - break
              when 1
                .content!= next.description
              when 2
                if next.description
                  .content!= next.description
                else
                  - const content = strip_html(next.content)
                  - let expert = content.substring(0, theme.index_post_content.length) 
                  - content.length > theme.index_post_content.length ? expert += ' ...' : ''
                  .content!= expert
              default
                - const content = strip_html(next.content)
                - let expert = content.substring(0, theme.index_post_content.length) 
                - content.length > theme.index_post_content.length ? expert += ' ...' : ''
                .content!= expert
else
  nav#pagination
    .pagination
      if is_home()
        - options.format = 'page/%d/#content-inner'
      !=paginator(options)