vue+Element-ui实现分页效果

<div class="deit">
 <div class="crumbs">
  <el-breadcrumb separator="/">
   <el-breadcrumb-item><i class="el-icon-date"></i> 数据管理</el-breadcrumb-item>
   <el-breadcrumb-item>用户列表</el-breadcrumb-item>
  </el-breadcrumb>
  <div class="cantainer">
     <el-table style="width: 100%;"
     :data="userList.slice((currentPage-1)*pagesize,currentPage*pagesize)" //对数据请求的处理，最为重要的一句话
     >
      <el-table-column type="index" width="50"> 
      </el-table-column>
      <el-table-column label="日期" prop="date" width="180"> 
      </el-table-column>
      <el-table-column label="用户姓名" prop="name" width="180"> 
      </el-table-column>
      <el-table-column label="邮箱" prop="email" width="180"> 
      </el-table-column>
      <el-table-column label="地址" prop="address" width="200"> 
      </el-table-column> 
     </el-table>
      <el-pagination
       @size-change="handleSizeChange"
       @current-change="handleCurrentChange"
       :current-page="currentPage"
       :page-sizes="[5, 10, 20, 40]" //这是下拉框可以选择的，每选择一行，要展示多少内容
       :page-size="pagesize"   //显示当前行的条数
       layout="total, sizes, prev, pager, next, jumper"
       :total="userList.length"> //这是显示总共有多少数据，
     </el-pagination>
  </div>
 </div>
</div>

data () {
  return {
    currentPage:1, //初始页
    pagesize:10, // 每页的数据
    userList: []
  }
 },

created() {
  this.handleUserList()
 },
 methods: {
  // 初始页currentPage、初始每页数据数pagesize和数据data
  handleSizeChange: function (size) {
    this.pagesize = size;
    console.log(this.pagesize) //每页下拉显示数据
  },
  handleCurrentChange: function(currentPage){
    this.currentPage = currentPage;
    console.log(this.currentPage) //点击第几页
  },
  handleUserList() {
   this.$http.get('http://localhost:3000/userList').then(res => { //这是从本地请求的数据接口，
    this.userList = res.body
   })
  }
 }