handleEdit (index, row) {
   // let id = row._id
    this.$router.push({name: "news-edit", params : {
      new : row
    }, query: {id: row._id, type: "edit"}})
  },
Let let id= row._id show id=undefined, but row._id is worth it. I don"t know why
mounted () {
  debugger
  console.log(this.$route.query.type)
  if ( "edit" == this.$route.query.type ){
    let old = this.$route.params.new
    this.title = old.title
    this.author = old.author
    this.content = old.content
    this.abstract = old.abstract
    this.coverImage = old.coverImage
  }
  console.log(this.title)
},
the same problem with old causes the following title not to get anything
