text: let themeReadingEntryCharExcerpt = 360
  let themeReadingEntrySentenceExcerpt = 3
  entry_char_excerpt: 360
      entry_sentence_excerpt: 3
  //先拿到字符串，第一个indexOf('<p>')的Index，第一个 indexOf('</p>),切出来，strip_html 删掉Tag，取前三句话
  
  if(post.excerpt) {
      strip_html(post.excerpt)
      }else{
      strip_html(truncate(post.content,{length: theme.reading.entry_char_excerpt }).split(/[。.]+/, theme.reading.entry_sentence_excerpt))
      }
      strip_html(post.content.substring(post.content.indexOf('<p>')+1, post.content.indexOf('</p>'))).split(/[。.]+/, theme.reading.entry_sentence_excerpt)