el-table获取到全部数据后前端处理分页

<el-table :data="dataBox"  style="width: 100%" @row-click="clickitemdata"
                :row-style="rowStyle" border v-loading="fullscreenLoading"
                @sort-change="sortChange"
                element-loading-text="拼命加载中">
...

// 分页

<div class="block" style="margin-top: 20px;">
  <el-pagination
      background
      layout="total,prev, pager, next"
      hide-on-single-page
      :total="runProcessTotal"
      :current-page="currentPage"
      @current-change="handleCurrentChangeyunxing"
  ></el-pagination>
</div>

 computed: {
    dataBox() {
　　　　// allList 全部数据
      return this.allList.slice(
          (this.currentPage - 1) * this.pageSize,
          this.currentPage * this.pageSize
      );
    },
 },

methods:

handleCurrentChangeyunxing(val) {
  this.currentPage = val;
},