Vue 将后台获取的数据进行分页

html部分

<div class="page">
    <button class="btn btn-default" type="submit" @click="primaryPage">首页</button>
    <button class="btn btn-default" type="submit" @click="prePage">上页</button>
    <button class="btn btn-default" type="submit">{{current_page}}/{{Math.ceil(arrs.length/pagesize)}}</button>
    <button class="btn btn-default" type="submit" @click="nextPage">下页</button>
    <button class="btn btn-default" type="submit" @click="lastPage">尾页</button>
</div>

vue部分

data : {
      currentPage : 1,//当前页号
      pagesize :10 //每页大小
     }
     
computed:{
    page_arrs(){
      let {currentPage,pagesize} = this
      return this.arrs.slice((currentPage-1)*pagesize,currentPage*pagesize)
    },
    current_page(){
      return this.currentPage
    }
},
methods: {
    primaryPage(){
      this.currentPage = 1
    },
    prePage(){
      if(this.currentPage == 1){
        return
      }
      this.currentPage = this.currentPage - 1
    },
    nextPage(){
      if(this.currentPage == Math.ceil(this.arrs.length/this.pagesize)){
        return
      }
      this.currentPage = this.currentPage + 1
    },
    lastPage(){
      this.currentPage = Math.ceil(this.arrs.length/this.pagesize)
    }
},