12.12 new askquestion

getTabName (item) {
      let res = ''
      let count = 0
      this.categoryIdList.forEach(element => {
        if (element === item.categoryId) {
          count++
        }
      })
      if (count) {
        res = item.categoryName + ' ' + `<em>${count}em>`
      } else {
        res = item.categoryName
      }
      return res
    },

您要问的问题是什么呢？