elemenet-ui 分页组件，如何控制页面显示数据数量/条数_table element限制显示数量

1、被分页的table表格，其绑定的数据源为schArr数组

 <el-table :data="schArr" border stripe>
        <el-table-column prop="title" label="标题" width="200"></el-table-column>
        <el-table-column label="日期" width="230">
          <template slot-scope="scope">
            <i class="el-icon-time"></i>
            <span>{{ scope.row.create_time }}</span>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" @click="handleLook(scope.row)"
              >查看</el-button>
            <el-button size="mini" type="success" @click="handleEdit(scope.row)"
              >编辑</el-button>
            <el-button size="mini" type="danger" @click="handleDelect(scope.row)"
              >删除</el-button>
          </template>
        </el-table-column>
</el-table>
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2. 分页部分代码

<el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="currentPage"
      :page-sizes="[5, 7, 10, 15]"
      :page-size="pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      class="fyDiv"
      :total="articleList.length">
</el-pagination>
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4. script data部分

<script>
export default {
  data() {
    return {
      schArr: [], // 此数组会由getBlogList()函数调用由articleList[]数组提取的部分数据存入来控制页面显示数据条数
      articleList: [], // 此数组为table表格的完整数据源
      currentPage: 1,
      pagesize: 10
    };
 },
 methods: {
 	// 页面获取数据的函数，在页面加载时自动执行
 	getMyBlogList() {
      this.$axios.get("/api/article/myList")
        .then(res => {
          console.log(res);
          if (res.data.code === 200) {
            this.articleList = res.data.data;
            // 获取页面数据后立马调用下面函数
            this.getPageData();
            return;
          }
          return this.$message.error("获取我的博客列表失败！");
        })
        .catch(e => {
          console.log(e);
        });
    },
    // 根据分页设置的数据控制每页显示的数据条数及页码跳转页面刷新
    getPageData() {
   	  let start = (this.currentPage - 1) * this.pagesize;
      let end = start + this.pagesize;
      this.schArr = this.articleList.slice(start, end);
    },
    // 分页自带的函数，当pageSize变化时会触发此函数
    handleSizeChange(val) {
      this.pagesize = val;
      this.getPageData();
    },
    // 分页自带函数，当currentPage变化时会触发此函数
    handleCurrentChange(val) {
      this.currentPage = val;
      this.getPageData();
    },
 },
 created() {
 	this.getMyBlogList()
 }
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总结：
js运算结果成NAN，运算数据中数据类型不同会导致此。可以用console.log（）调试出错部分的数据。

分页部分关键代码

// 根据分页设置的数据控制每页显示的数据条数及页码跳转页面刷新
getPageData() {
   let start = (this.currentPage - 1) * this.pagesize;
   let end = start + this.pagesize;
   this.schArr = this.articleList.slice(start, end);
},
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附上此页面整体代码

<template>
  <div class="wrapper">
    <h1 class="title">文章列表</h1>
    <div class="article">
      <el-button class="addBtn" @click="handleAdd">新增+</el-button>
      <el-table :data="schArr" border stripe>
        <el-table-column
          prop="title"
          label="标题"
          width="200"
        ></el-table-column>
        <el-table-column label="日期" width="230">
          <template slot-scope="scope">
            <i class="el-icon-time"></i>
            <span>{{ scope.row.create_time }}</span>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" @click="handleLook(scope.row)"
              >查看</el-button
            >
            <el-button size="mini" type="success" @click="handleEdit(scope.row)"
              >编辑</el-button
            >
            <el-button
              size="mini"
              type="danger"
              @click="handleDelect(scope.row)"
              >删除</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </div>
    <div>
      <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="currentPage"
      :page-sizes="[5, 7, 10, 15]"
      :page-size="pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      class="fyDiv"
      :total="articleList.length">
    </el-pagination>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      schArr: [],
      articleList: [],
      currentPage: 1,
      pagesize: 10
    };
  },
  methods: {
    handleAdd() {
      this.$router.push({ name: "editArticle" });
    },
    handleLook(row) {
      let id = row.id;
      window.open("#/detail/" + id);
    },
    handleEdit(row) {
      let id = row.id;
      this.$router.push({ path: `/article/edit/${id}` });
    },
    handleDelect(row) {
      let id = row.id;
      this.$confirm("此操作将永久删除该文章, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(() => {
          this.$axios
            .post("/api/article/delete", {
              article_id: id
            })
            .then(res => {
              if (res.data.code === 200) {
                this.$message({
                  type: "success",
                  message: "删除成功!"
                })
                setTimeout(() => {
                  this.getMyBlogList()
                  // location.reload() 过渡效果太难看了
                }, 1500);
              }
            });
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除"
          });
        });
    },
    getMyBlogList() {
      this.$axios
        .get("/api/article/myList")
        .then(res => {
          console.log(res);
          if (res.data.code === 200) {
            this.articleList = res.data.data;
            // console.log(this.articleList)
            this.getPageData();
            return;
          }
          return this.$message.error("获取我的博客列表失败！");
        })
        .catch(e => {
          console.log(e);
        });
    },
    handleSizeChange(val) {
      console.log(`每页 ${val} 条`);
      this.pagesize = val;
      this.getPageData();
      console.log(this.pagesize);
    },
    handleCurrentChange(val) {
      console.log(`当前页: ${val}`);
      this.currentPage = val;
      this.getPageData();
      console.log(this.currentPage);
    },
    getPageData() {
      console.log('是否yes');
      let start = (this.currentPage - 1) * this.pagesize;
      let end = start + this.pagesize;
      this.schArr = this.articleList.slice(start, end);
    }
  },
  created() {
    this.getMyBlogList();
    // this.getPageData();
  }
};
</script>

<style lang="scss" scoped>
.title {
  margin: 30px 0;
  text-align: center;
  font-weight: bold;
  font-size: 28px;
}
.article {
  .addBtn {
    float: right;
    margin-bottom: 20px;
  }
}
/deep/ .el-table {
  .cell {
    text-align: center;
  }
}
.fyDiv {
  float: right;
  margin-top: 30px;
  padding-bottom: 20px;
}
</style>

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