querySearch(queryString, cb) {
      var comefroms = this.comefroms
      var results = queryString
        ? comefroms.filter(this.createFilter(queryString))
        : comefroms
      // 调用 callback 返回建议列表的数据
      cb(results)
    },
    // 过滤
    createFilter(q) {
      return (v) => {
        return v.value.toLowerCase().indexOf(q.toLowerCase()) === 0
      }
    },
    querySearchAutur(queryString, cb) {
      var authors = this.authors
      var results = queryString
        ? authors.filter(this.createFilter(queryString))
        : authors
      // 调用 callback 返回建议列表的数据
      cb(results)
    },